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Pulse Compression Transmission Gratings

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					OPTICAL SYSTEMS I LASERS & MATERIAL PROCESSING I INDUSTRIAL METROLOGY I TRAFFIC SOLUTIONS I DEFENSE & CIVIL SYSTEMS




 Pulse Compression Transmission Gratings




 High output power femtosecond lasers require sophisti-      Features:
 cated chirped pulse amplification (CPA) setups.             •	 Fused	silica	transmission	grating
 Pulse compressors using dielectric gratings in Littrow      •	 High	diffraction	efficiency
 mounting show very high efficiencies and lifetimes in       •	 High	uniformity	of	efficiency
 such CPA setups.                                            •	 Low	thermal	wavefront	distortion	by	the	use		
 Jenoptik dielectric pulse compression gratings are highly      of non-absorbing dielectric material
 efficient and durable under high laser power densities.     •	 Monolithic	fused	silica	design	for	highest	damage	
 The efficiency advantage over metal gratings results in        threshold and lifetime
 more than 20% additional output power in a typical          •	 Low	Self	Phase	Modulation	(SPM)
 CPA setup with four grating passes.                         •	 Custom	designs	with	short	delivery	time
 The Jenoptik pulse compression gratings are made
 of high-purity fused silica and are thus well suited        Applications:
 for a broad wavelength range.                               •	 Laser	pulse	compression	in	chirped	pulse	amplifiers	
                                                                (CPA)
                                                             •	 Intracavity	Dispersion	Controle
                                                             •	 Wavelength	selection	and	bandwidth	narrowing	
                                                             •	 UV	laser	applications




                                                                                             Microoptics
        Pulse Compression Transmission Gratings


         Specifications
          Configuration:                                                                              Single	or	multi	pass	transmission	setup
          Ultrafast	Laser:                                     Ti:Sapphire              Yb:KAW,	Nd:Glass,	Nd:YAG                                                     Yb fiber                               Er fiber
          Wavelength	(nm):                                    670 ... 1080                          1025 ... 1064                                                     1080                                   1560
          Frequency	(typ.	lines/	mm):                              1480                                 1250                                                          1000                                   800
          Efficiency maximum (%):     1
                                                                     98                                   97                                                           98                                     97
          Clear Aperture (typ. in mm):                                                                                                   up to 125 x 125
          Polarization:                                                                                                                           s-polarized
          Damage	threshold2 (mJ/	cm2):                                                                                                                300
          Thermal load (kW/	cm ):
                               3           2
                                                                                                                                                      >3
          Wavefront	distortion:                                                                                                                     < l/	10
          Thickness (mm):  4
                                                                                                                                                      6.3
          Options:                                                                                 Custom	size,	Thickness	and	Groove	frequency
          Product number:                                                                                                                           029130
          1
           	with	AR-Coating,	single	pass,	theoretical	maximum,                          3
                                                                                         	1080	nm,	8	kW	Disc	laser,
          2
           	800	nm,	140	fsec,	1.480	lpmm,	with	AR-Coating,                              4
                                                                                          optional 3.05 or 2.3 mm



          Typical measured 1st order efficiency uniformity map

                      80

                                                                                                                                        1


                                                                                            0.96                                                                                                    measurement
                                                                                                                                                                                                    sech²
               Y mm




                      40                                                                    0.95                                       0,8


                       0

                                                                                            0.94
                                                                                                               SHG intensity [ps]
                                                                                                                SHG	intensity	(a.u.)




                                                                                                                                       0,6


                           0                       40                        80                                                                                                              320 fsec
                                                 X mm


                                                                                                                                       0,4
          Groove	density:	(lines/mm)                     1480
          Diffraction:                                   -1st order
          Dispersion:	(°/nm)                             0.105
          Clear Aperture: (mm x mm)                      80 x 80
                                                                                                                                       0,2
          Wavelength:	(nm)                               800
          Polarization:                                  s-polarized


          Results:                                                                                                                      0
          Average efficiency: (%)                        95.5                                                                                -2        -1,5     -1     -0,5       0        0,5          1     1,5      2
                                                                                                                                                                              Delay	[ps]
          Uniformity:	(%)                                ±1.2                                                                                                                 Delay [ps]

         It	is	our	policy	to	constantly	improve	the	design	and	specifications.	Accordingly,	the	details	represented	herein	cannot	be	regarded	as	final	and	binding.
                                                                                                                                                                                                                                029130-003-99-14-0908-en




                                          JENOPTIK		I		Optical	Systems
                                          Microoptics	Business	Unit
                                          JENOPTIK	Laser,	Optik,	Systeme	GmbH                                                                     MEMS	Optical,	Inc.
                                          Goeschwitzer	Strasse	25		I		07745	Jena		I		Germany                                                      205	Import	Circle		I		Huntsville		I		AL	35806		I		USA
                                          Phone	+49	3641	65-2442		I		Fax	-2443                                                                    Phone	+1	256	859-1886		I		Fax	+1	256	859-5890
                                          microoptics@jenoptik.com		I		www.jenoptik-los.com                                                       info@memsoptical.com		I		www.memsoptical.com




PCG-en-081008.indd 2                                                                                                                                                                                                   08.10.2008 15:49:57

				
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