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					MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY


STANDARD OPERATING PROCEDURE                                           NUMBER: SOP L 100

Use of Advanced Spectroscopy Laboratory                                ISSUE:       2



Prepared by: Paolo Olivero

Signature:                                                             Date: 05 / 01 / 2006




Review Frequency

     Annually from date of issue/review.


1.      PURPOSE

               This Standard Operating Procedure (SOP) describes the procedures to use
        the equipment in the Advanced Spectroscopy Laboratory in the Centre of
        Excellence Cleanroom.

2.      SCOPE

              This SOP refers to the Centre of Excellence for Quantum Computer
        Technology Cleanroom located in the basement of the School of Physics at The
        University of Melbourne.

3.      RESPONSIBILITIES

               It is the responsibility of the Area Responsible Personnel (ARP) of the
        Advanced Spectroscopy Laboratory to ensure that these procedures are
        periodically updated and followed by all the users of the laboratory.

4.      REFERENCES

        Forms:          Lab permit - ASL
        SOPs:           N/A
        OI’s:           Wire 1.3 Raman software manual
                        LinkamTM stage reference manual
        Programs:       Facilities and Infrastructure Program
        Other:          N/A

5.      DEFINITIONS

                         NIL

6.      SAFETY INSTRUCTIONS

                         Follow standard laboratory safety protocols at all times.
7.      EQUIPMENT




SOP L 100                             05/01/2006                                     Page 1 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY


                RenishawTM Raman Spectrometer
                Optical table: filter and alignment components
                      +
                514 Ar laser
                325 Cd laser
                244 Ar+ laser
                LinkamTM cooling stage

9.       LASER STARTUP AND SHUTDOWN PROCEDURES

         9.1.   Spectra Physics 2016-5 Argon Ion Laser (488, 514 nm)      page 3

         9.2.   Kimmon 325 Cd Laser (325 nm)                              page 5

         9.3.   Coherent INNOVA (FreD) Ar Ion Laser (244nm)               page 6

         9.4.   Coherent INNOVA (FreD) Ar Ion Laser (514nm)               page 8

10.      OPEARATIONS WITH RENISHAW SPECTROMETER                           page 10




     !               IMPORTANT SAFETY RULES                                     !
 From outside the laboratory, you can check if there are lasers on inside the
  lab from the red light “LASER ON” indicator

 If the “LASER ON” indicator is flashing, before entering you must knock at
  the lab door or call the laboratory phone and wait for the lab users to open
  you the door

 For the safety of all personnel, always turn on the “LASER ON” indicator
  whenever using any laser

 Whenever the lasers are on, every user must wear:

             Laser eye safety goggles
             Gloves

 Users cannot wear jewellery (e.g. rings or watches) that may reflect the
  beam, particularly during alignment. In addition, users should be aware of
  any clothing (e.g. ties) or hair that could fall into and scatter or ignite in the
  beam

 Entering in the lab without overriding the Laser Interlock will close all laser
  shutters, independently from the experiments being performed in the
  laboratory

 Area Responsible Personnel: Paolo Olivero (ext: 44012)
SOP L 100                          05/01/2006                          Page 2 of 13
 Laser Protection Officer: Paul Spizzirri (ext: 44012)
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY



      9.1. Spectra Physics 2016-5 Argon Ion Laser
                  (1.5W maximum @  = 488 and 514.5 nm)
             Startup and Shutdown procedures
       Class IV lasers are used in the UV Raman Laboratory.
       This facility may be operated only by suitably trained and
       authorized personnel.

     Operation of the Spectra Physics 2016-5 Argon Ion Laser
Startup Procedure:

1.     Switch on (Power) the Interlock Control Unit located inside the lab near
       the door. The Laser On indicators will light up.
2.     Switch on the interlock actuators power supply located under the
       optical table.
3.     Check that the external loop water temperature is within specs*.
                         Thermometer alarm set at 24 ºC
4.     Open both taps of external loop water.
5.     Turn on the cooling water chiller:
       at the floor mains socket with the orange extension lead plugged in.
6.     Turn on the “Laser Air Purge” pump located under the optical table.
7.     Insure that the Argon Ion laser power supply is plugged into the mains
       socket and turn the switch on.
8.     Set the Remote Control switches to the following values:

        Range = 2W     Head = A                  Control = Remote
        Meter = Watts Current = Minimum          Power = Minimum
        Mode = Current

9.     Insert key into the Remote Control unit and switch ON.
10.    Once started, slowly increase the current to maximum.
11.    Adjust the end mirror mount for maximum power. Use in sequence
       vertical and horizontal adjustments at the back of the laser.
12.    Record the maximum power in the Laboratory Log Book.
13.    Leave the Laser to warm up for about 15 minutes with these settings.
14.    Insure that the cooling water temperature remains within specs*.
15.    After the warm up period, set the power control to 50% of full scale and
       switch the Mode from Current to Power control.
16.    Place the Laser Power Meter Head into the beam path, after the first
       mirror in front of laser.




SOP L 100                     05/01/2006                            Page 3 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY


      AT THIS STAGE YOU SHOULD BE WEARING SAFETY GOGGLES!

17.   Enable (Reset) interlock shutter at Interlock Control Unit.
18.   Open the shutter and adjust the position of the Laser Power Meter
      head for maximum readout.

      GLOVES ARE MANDATORY ! AVOID INTERSECTING THE BEAM
      WITH YOUR HANDS!

19.   Set the output power as required by the experiment and record in the
      log book:

      DO NOT EXCEED THE MAXIMUM OF 20 mW AS SPECIFIED FOR
      THE RENISHAM RAMAN SPECTROMETER INPUT


Shutdown Procedure:

1.    Close any instrument Laser shutters.
2.    Turn the Laser power down to 0 on the Remote Control.
3.    Turn the Laser Current down to 0 on the Remote control.
4.    Switch off the Remote Control using the key.
5.    Switch off the Laser Power Supply at the Mains Isolator switch.
6.    Switch off the Interlock Control Unit and any additional Laser On
       indicators.
7.    Let the Laser cool down for ~10 minutes.
8.    Switch off the Laser Air Purge pump and the Water Chiller.
9.    Close the external loop water taps.




_________________________________________________________
*External loop temperature: <20ºC (normal operation)



SOP L 100                    05/01/2006                           Page 4 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY



                  9.2. Kimmon 325 Cd Laser
                            ( 15mW @ 325 nm)
            Startup and Shutdown procedures
     Class IV lasers are used in the UV Raman Laboratory.
     This facility may be operated only by suitably trained and
     authorized personnel.

             Operation of the Kimmon 325 Cd Laser

Startup Procedure:

1.   Switch on (Power) the Interlock Control Unit located inside the lab near
     the door. The Laser On indicators will light up.
2.   Switch on the interlock actuators power supply located under the
     optical table.
3.   Switch on the Kimmon Power Supply.
4.   Leave the Laser to warm up for about 30 minutes.

     AT THIS STAGE YOU SHOULD BE WEARING SAFETY GOGGLES !


     GLOVES ARE MANDATORY ! AVOID INTERSECTING THE BEAM
     WITH YOUR HANDS!

5.   Enable (Reset) interlock shutter at Interlock Control Unit.
6.   Open the shutter and adjust the position of the Laser Power Meter
     head for maximum readout.
7.   Record the power in the Laboratory Log Book.

Shutdown Procedure:

1.   Close any instrument Laser shutters.
2.   Switch off the Laser Power Supply.
3.   Switch off the Interlock Control Unit and any additional Laser On
     indicators.




SOP L 100                   05/01/2006                           Page 5 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY



        9.3. Coherent INNOVA (FreD) Ar Ion Laser
                                 (200mW @ 244 nm)
            Startup and Shutdown procedures
      Class IV lasers are used in the UV Raman Laboratory.
      This facility may be operated only by suitably trained and
      authorized personnel.
         Operation in UV mode @ 244 nm
Startup Procedure:

1.    Switch on (Power) the Interlock Control Unit located inside the lab near
      the door. The Laser On indicators will light up.
2.    Switch on the interlock actuators power supply located under the
      optical table.
3.    Check that the external loop water temperature is within specs*.
                        Thermometer alarm set at 24 ºC
4.    Open both taps of external loop water.
5.    Turn on the cooling water chiller:
       at the floor mains socket with the orange extension lead plugged in.

                             For trained users ONLY:

6.    Establish N2 flow of 0.4 to 0.5 scfs by setting the line pressure to ~ 0.5
      Bar, or first division on 0-15 Bar gauge at rear of laser. Check high
      purity N2 cylinders in service bay and switch over if empty (note: 25
      days @ 0.4 scfs per cylinder).

7.    Install frequency doubling BBO crystal in housing according to
      instructions in INNOVA manual.

8.    Insure that the INNOVA laser power supply is plugged into the mains
      socket and turn the key-switch to stand-by.
9.    Turn on the unit at the remote control box and wait for warm-up
       Set the mode to current. After delay (loud noise!) slowly increase
      current to ~38A.

      AT THIS STAGE YOU SHOULD BE WEARING SAFETY GOGGLES !

10.   Open the intra-cavity shutter and set aperture to 10-12.
11.   Adjust the end mirror mount and the frequency doubling crystal stage
      for maximum power reading on remote. Use in sequence vertical and


SOP L 100                     05/01/2006                            Page 6 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY


      horizontal fine adjustments at the front of the laser. Make only small
      adjustments at a time.
12.   Slowly increase/decrease the current to reach the required beam
      power.
13.   Leave the Laser to warm up for about 15 minutes with these settings.
14.   Insure that the cooling water temperature remains within specs*.

      GLOVES ARE MANDATORY! AVOID INTERSECTING THE BEAM
      WITH YOUR HANDS!

15.   Enable (Reset) interlock shutter at Interlock Control Unit.
16.   Open the shutter and adjust the position of the Laser Power Meter
      head for maximum readout.
17.   Record the power in the Laboratory Log Book.

      DO NOT EXCEED THE MAXIMUM OF 20 mW AS SPECIFIED FOR
      THE RENISHAM RAMAN SPECTROMETER INPUT

Shutdown Procedure:

1.    Close any instrument Laser shutters.
2.    Turn the Laser power down to 0 on the Remote Control.
3.    Turn off the current on the Remote control.
4.    If the BBO crystal is left in place, switch the Laser Power Supply to
      stand-by mode and keep the N2 flowing.
5.    Switch off the Interlock Control Unit and any additional Laser On
      indicators.
6.    Let the Laser cool down for ~10 minutes.
7.    Switch off the Water Chiller.
8.    Close the external loop water taps.
9.    Store BBO crystal in desiccators if 244 not used for extended periods.
10.   Turn off N2 supply and switch off the power supply.




_________________________________________________________
*External loop temperature: <20ºC (normal operation)



SOP L 100                    05/01/2006                           Page 7 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY




       9.4. Coherent INNOVA (FreD) Ar Ion Laser
                 (1.5W maximum @  = 488 and 514.5 nm)
            Startup and Shutdown procedures
      Class IV lasers are used in the UV Raman Laboratory.
      This facility may be operated only by suitably trained and
      authorized personnel.

        Operation in Visible mode @ 514 nm
Startup Procedure:

1.    Switch on (Power) the Interlock Control Unit located inside the lab near
      the door. The Laser On indicators will light up.
2.    Switch on the interlock actuators power supply located under the
      optical table.
3.    Check that the external loop water temperature is within specs*.
                        Thermometer alarm set at 24 ºC
4.    Open both taps of external loop water.
5.    Turn on the cooling water chiller:
       at the floor mains socket with the orange extension lead plugged in.


6.    Insure that the INNOVA laser power supply is plugged into the mains
      socket and turn the key-switch to stand-by.
7.    Turn on the unit at the remote control box and wait for warm-up
       Set the mode to current. After delay (loud noise!) slowly increase
      current to ~15A.

      AT THIS STAGE YOU SHOULD BE WEARING SAFETY GOGGLES !

8.    Open the intra-cavity shutter and set aperture to 10-12.
9.    Adjust the end mirror mount for maximum power reading on remote.
      The output should be ~ 100 mW.
      Use in sequence vertical and horizontal fine adjustments at the front of
      the laser. Make only small adjustments at a time.
11.   Slowly increase/decrease the current to reach the required beam
      power.
12.   Leave the Laser to warm up for about 15 minutes with these settings.
13.   Insure that the cooling water temperature remains within specs*.



SOP L 100                    05/01/2006                           Page 8 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY


      GLOVES ARE MANDATORY! AVOID INTERSECTING THE BEAM
      WITH YOUR HANDS!

15.   Enable (Reset) interlock shutter at Interlock Control Unit.
16.   Open the shutter and adjust the position of the Laser Power Meter
      head for maximum readout.
17.   Record the power in the Laboratory Log Book.

      DO NOT EXCEED THE MAXIMUM OF 20 mW AS SPECIFIED FOR
      THE RENISHAM RAMAN SPECTROMETER INPUT

Shutdown Procedure:

11.   Close any instrument Laser shutters.
12.   Turn the Laser power down to 0 on the Remote Control.
13.   Turn off the current on the Remote control.
14.   Switch off the Laser Power Supply and the Mains Isolator switch.
15.   Switch off the Interlock Control Unit and any additional Laser On
      indicators.
16.   Let the Laser cool down for ~10 minutes.
17.   Switch off the Water Chiller.
18.   Close the external loop water taps.




_________________________________________________________
*External loop temperature: <20ºC (normal operation)



SOP L 100                   05/01/2006                           Page 9 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY



                 9.4. Measurements with Renishaw
                        Raman Spectrometer
1. Startup procedures

  1.1. Follow the laser startup procedures, if appropriately trained (see sections 9.1,
  1.2. 9.2, 9.3, 9.4)

  1.3. Switch on the “LASER ON” red indicator

  1.4. Switch on the interlock (box at the wall): POWER, ENABLE (key), RESET

  1.5. With the power meter, check that the laser light intensity at the input of the
        Renishaw spectrometer is below 25 mW (use gloves!)

  1.6. Turn on the microscope

  1.7. Turn on the Renishaw spectrometer

  1.8. Turn on the “ProScan II” module

  1.9. Start the “Renishaw – WiRE” software (icon accessible from the desktop of the
        PC)

        1.9.1.    Click “OK” on the start-up window

        1.9.2.    Select “Check motors”, unless you are using the software only for data
                   analysis (“Skip check”)

        1.9.3.    Wait until the checking procedures are completed by the software

2. Raman / PL measurements – basic operations

  2.1. Microscope:

             When operating in standard microscopy mode, the rotating selectors must
             be in the “2 -1” position:
                    2 – eyepiece
                    1 – white light
             When acquiring a spectrum, the rotating selectors must be in the “1 - 2”
             position:
                    1 – laser
                    2 – measure

             The sample is brought into focus by adjusting the z position with the knob on
             the right side (coarse and fine adjust).
             The light intensity can be adjusted with the knob on the left side (only
             reflected light images can be acquired).




SOP L 100                         05/01/2006                                Page 10 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY


  2.2. Check before acquiring a spectrum:

        2.2.1.   Laser shutter: OPEN

        2.2.2.   Interlock: ON and ENABLED (RESET if tripped)

        2.2.3.   Module “S - 8RMN - 1384” (shutter control on the optical table, to the
                  right with respect to the Renishaw box): “Auto” position

        2.2.4.   Microscope in the “1-2” position

  2.3. Setting the acquisition parameters:

             The “Experiment setup” window can be accessed from the main menu
             (Collect  Experimental Setup) or from button “A” (see Fig. 1). The
             acquisition parameters (static / dynamic spectrum, center wavelength /
             range, units, acquisition time, accumulation, objective, laser type, grating,
             power %) can be set on such window.




                                        B C A       D

 Fig. 1: screen of “Renishaw – WiRE” software.


  2.4. Starting the spectrum acquisition:

             The acquisition of a single spectrum is started by selecting “Collect  Get”
             from the main menu, or by clicking button “B” (see Fig. 1).
             The continuous acquisition of subsequent spectra is started by selecting
             “Collect  Cycle” from the main menu, or by clicking button “C” (see Fig. 2).
             In both case, the acquisition can be aborted by clicking a second time on
             button “B” and clicking on “Abort”; the “Abort” button is already available after
             the first click of button “C”, in the case of continuous acquisition.

  2.5. Controlling the sample position:

             The sample position can be visualized on the PC screen after setting the
             microscope in the “2 -1” position, and clicking on button “D” (see Fig. 1) or
             selecting from the main menu “Collect  Applications  Display live video”.
             Images of the sample can be saved in *.bmp format with crosshairs and
             scale.
             The sample can be moved automatically by setting the coordinates on the
             “Live Video” screen, or by using the joystick which is interfaced to the
             “ProScan II” module.




SOP L 100                        05/01/2006                                  Page 11 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY


3. Test measurements

  3.1. Before conducting any kind of experiment, every user must collect 1 reference
        spectrum from a test sample in standard conditions, in order to check the
        operational status of the apparatus

  3.2. Test sample: diamond sample on glass slide

  3.3. Standard measurement conditions:

       3.3.1.   Laser power at the spectrometer input:       5 mW
       3.3.2.   Microscope objective:                        ×50 mag
       3.3.3.   Confocal aperture:                           5
       3.3.4.   CCD aperture:                                10 pixels
       3.3.5.   Spectrum:                                    static, centered at 1332 cm-1
       3.3.6.   Acquisition time:                            10 sec

  3.4. Logbook filling: the user must save the test spectrum in his working directory and
        record the peak position (expected to be 1332 cm-1) and intensity on the
        Logbook, together with name user, date and all requested information.

  3.5. If any of the features in the test spectrum are unusual (high background signal,
         low signal intensity, wrong peak position) the user must immediately report to
         the ARP or end immediately the experiment. Experienced users may
         re-configure the laser, the elements on the optical table or the calibration of the
         Renishaw spectrometer, in accord with their training.

4. Raman / PL measurements – advanced options

  The Wire software offers many options, both as regards the setting of the
  instrumentation (calibrate system, running maps…) and the data analysis (import /
  export files, fitting, overlay plots…). There are too many options to be covered in the
  present document, therefore the users must refer to:

  4.1. Induction by the Area Responsible Personnel (ARP) or by users who received the
         induction “Employ the Renishaw Raman Spectrometer”; the ARP and enabled
         users are listed in the Safety Folder

  4.2. “Wire 1.3 Raman software” manual, available in locker #6 (Raman Lab Storage)
        in the entrance of the Cleanroom




SOP L 100                       05/01/2006                                  Page 12 of 13
MARC/CENTRE OF EXCELLENCE FOR QUANTUM COMPUTER TECHNOLOGY


5. Shutdown procedures

  5.1. Close the “Renishaw – WiRE” software

  5.2. Turn off the “ProScan II” module

  5.3. Turn off the Renishaw spectrometer

  5.4. Turn off the microscope

  5.5. Follow the laser shutdown procedures, if appropriately trained (see sections 9.1,
        9.2 or 9.3)

  5.6. Turn off the “LASER ON” indicator

  5.7. Turn off the interlock (box at the wall): DISABLE (key), POWER

6. Working after hours

  Only users who have been explicitly authorized by the ARP can use the ASL after
  hours; non-authorized users can work after hours only if assisted by authorized users.
  All users working after hours must refer to the standard Cleanroom procedures (work
  buddy, time limitations, …).

7. Unattended equipment left on during working hours

  Leaving equipment ON and UNATTENDED during working hours is tolerated in the
  Advanced Spectroscopy Laboratory. Users MUST leave clear contact details in the
  laboratory logbook. The laboratory should not be left unattended for long periods
  (>3 hours).

8. Unattended equipment left on after hours

  Leaving any equipment ON and UNATTENDED after hours is STRICTLY FORBIDDEN
  in the Advanced Spectroscopy Laboratory, under any circumstances.




                                   DOCUMENT END


SOP L 100                        05/01/2006                             Page 13 of 13

				
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