ApplicationsDispersion pre compensation in femtosecond laser systemsSpecial featuresHigh throughputCompact compressorAccurate control of higher order dispersionDispersionmanagementbecomesstraightforward byemployingFEMTOLASERSproprietarydispersive mirrortechnology.Matchedmirrorsetssupporting pulse durations down to less than 7 fs are available from stock. Custom mirror compressors can be tailored to compen-satethedispersionofagivenopticalsetup,upto several thousand fs2Group Delay Dispersion (GDD).Comparedtoalternativessuchasprismcompres-sors,theseallmirrorcompressorsofferaccuracy, compactness,userfriendliness,stability,andhigh throughput. FEMTOLASERShasadecadelongexperiencein thedesign,characterizationandimplementationof dispersive mirror compressors.Optics for dispersion managementGDDvs.wavelengthper1mmforfrequently usedopticalglasses(red:BK7,black:fused silica, blue: calcium uoride).20 fs10 fs7 fs40Output pulse duration as a function of the GDD of the opticalsetupfora7fsbandwidth-limitedGaussian input pulse. Typicalsecondorderinterferometricautocorrelation traceobtainedattheoutputofadispersivemirror compressor for sub 7 fs pulses.0 100 20001020304050607080GDD ( fs2 )t (fs)Special features High throughput, compact compressorAccurate control of higher order dispersion Customized mirror sets can be supplied upon requestApplicationsDispersion pre-compensation for sub-7 fs pulsesPrism compressors are not suitable for disper-sionpre-compensationofsub-10fspulses becauseofthehigherorder(mainlythird order)dispersiontheyintroduce.Dispersive mirrorsetswithsufcientbandwidthand controlled third order dispersion make disper-sioncompensationstraightforwardevenat pulse durations below 7 fs. For optimum ne tuning of the GDD a pair of thin fused silica wedges (OA124, not included) should be used in conjunction with the mirror compressor. Dispersive mirror modules forsub-7 fs pulses | 800 nmOptics for dispersion managementOrder code GSM015 GSM014 GSM214Wavelength range 620 nm - 920 nmAverage GDD/bounce - 45 ( 10) fs at 800 nmReflectance > 99.5 % per bounceSupported pulse duration < 7 fs(if spectrum and wavelength range match)Angle of incidence 0 to 10 s-polarized | 0 to 15 p-polarizedNumber of mirrors 2Surface S1 L/10 at 633 nm | 10-5 scratch-dig | flat | dispersive coatingSurface S2 inspection polishing | flat | uncoatedSubstrate material fused silicaFree aperture > 85 % of the diameterDiameter 0.5 '' 7 '' 2 ''Thickness 6.35 mm 6.35 mm 9 mm or 12.6 mmWedge angle < 5 ' 41Special features High throughput, compact compressorAccurate control of higher order dispersion Customized mirror sets can be supplied upon requestApplicationsDispersion pre-compensation for sub-10 fs pulsesDispersive mirror modules for sub-10 fs | 800 nmOptics for dispersion managementOrder code GSM008 GSM007 GSM207Wavelength range 700 nm - 890 nmAverage GDD/bounce - 45 ( 10) fs at 800 nmReflectance > 99.5 % per bounceSupported pulse duration < 10 fs(if spectrum and wavelength range match)Angle of incidence 0 to 10 s-polarized | 0 to 15 p-polarizedNumber of mirrors 2Surface S1 L/10 at 633 nm | 10-5 scratch-dig | flat | dispersive coatingSurface S2 inspection polishing | flat | uncoatedSubstrate material fused silicaFree aperture > 85 % of the diameterDiameter 0.5 '' 1 '' 2 ''Thickness 6.35 mm 6.35 mm 9 mm or 12.6 mmWedge angle < 5 'Typicalsecondorderinterferometricautocorrelation traceobtainedattheoutputofadispersivemirror compressor for sub 10 fs pulses and 45.0 100 200102030405060GDD ( fs 2 )t (fs)Output pulse duration as a function of the GDD of the opticalsetupfora10fsbandwidth-limitedGaussian input pulse. Prism compressors are not suitable for disper-sionpre-compensationwithsub-10fspulses because of the higher order (mainly third order) dispersiontheyintroduce.Dispersivemirror setswithsufcientbandwidthandcontrolled thirdorderdispersionmakedispersion compensationstraightforwardevenatpulse durations below 7 fs. For optimum ne tuning oftheGDDapairofthinfusedsilicawedges (OA124 or OA924, not included) should be used in conjunction with the mirror compressor. 42Output pulse duration as a function of the GDD of the opticalsetupfora20fsbandwidth-limitedGaussian input pulse. Typicalsecondorderinterferometricautocorrelation traceobtainedattheoutputofadispersivemirror compressor for sub 20 fs pulses.0 100 200 300 4002030405060GDD ( fs2 )t (fs)Special features High throughput, compact compressorAccurate control of higher order dispersion ApplicationsDispersion pre-compensation for sub-20 fs pulsesMirrordispersioncompensationmodules arecompact,userfriendlyandcosteffec-tive alternative to prism pairs in applications that require dispersion pre-compensation for sub-20fspulses.Custom,laboratory-tested mirror sets compensating a specied amount ofGDDandTODcanalsobesuppliedupon request. Dispersive mirror modules forsub-20 fs pulses | 800 nmOptics for dispersion managementOrder code GSM004 GSM003 GSM208Wavelength range 750 nm - 850 nmAverage GDD/bounce - 45 ( 10) fs at 800 nmReflectance > 99.5 % per bounceSupported pulse duration< 20 fs(if the spectrum matches the wavelength range)Angle of incidence 0 to 10 s-polarized | 0 to 15 p-polarizedNumber of mirrors 2Surface S1 L/10 at 633 nm | 10-5 scratch-dig | flat | dispersive coatingSurface S2 inspection polishing | flat | uncoatedSubstrate material fused silicaFree aperture > 85 % of the diameterDiameter 0.5 '' 1 '' 2 ''Thickness 6.35 mm 6.35 mm 9 mm or 12.6 mmWedge angle < 5 ' 43Output pulse duration as a function of the GDD of the opticalsetupfora15fsbandwidth-limitedGaussian input pulse. Typicalsecondorderinterferometricautocorrelation traceobtainedattheoutputofahigh-GDDmirror compressor for sub-15 fs pulses. A total GDD of 640 fs2 was compensated in this example.0 1000 2000 3000 40002004006008001000GDD ( fs2 )t (fs)Special features High throughput, compact compressorAccurate control of higher order dispersion ApplicationsDispersion pre-compensation in complex optical systemsMirrorpairscapabletocompensate severalhundredsoffs2enablethedistor-tionfreedeliveryofsub-15fspulsesvia complexopticalsystemslikee.g.achro-matic lenses. Fine tuning of the dispersion canbeachievedbyusingthesemirrors inconjunctionwithapairofAR-coated wedges (OA324, OA325).High dispersionmirror modules for sub-15 fs pulses | 800 nmOptics for dispersion managementOrder code GSM216 GSM217Wavelength range 720 nm - 880 nmAverage GDD/bounce < -250 ( 20) fs at 800 nmReflectance > 99 % per bounceSupported pulse duration< 15 fs(if the spectrum matches the wavelength range)Angle of incidence 0 to 10 s-polarized | 0 to 15 p-polarizedNumber of mirrors 2Surface S1 L/10 at 633 nm | 10-5 scratch-dig | flat | dispersive coatingSurface S2 inspection polishing | flat | uncoatedSubstrate material fused silicaFree aperture > 85 % of the diameterDiameter 0.5 '' 1 ''Thickness 6.35 mmWedge angle < 5 '44Output pulse duration as a function of the GDD of the opticalsetupfora10fsbandwidth-limitedGaussian input pulse. Typicalsecondorderinterferometricautocorrelation traceobtainedattheoutputofadispersivemirror compressor for sub 10 fs pulses and 45. 0 100 200102030405060GDD ( fs 2 )t (fs)02468t pulse=9. 8fsDelay( arb.u.)SH Intensity (arb. u.)Special features Low loss, enhanced bandwidth folding mirrorsApplicationsbeam steering and dispersion pre-compensation for sub-10 fs pulsesThesemirrorssimultaneouslyprovide lowlossbeamsteeringanddispersion pre-compensation over a bandwidth suffi-cientlylargetosupportsub-10fspulses. Theiruseislimitedtop-polarizedlight -thepolarizationstatesuppliedbymost lasers.Dispersive mirror modules forsub-10 fs pulses | 800 nm | 45Optics for dispersion managementOrder code GSM021 GSM022 GSM023Wavelength range 670 nm - 1070 nmAverage GDD/bounce - 60 ( 15) fs at 800 nmReflectance > 99.5 % per bounceSupported pulse duration< 10 fs(if the spectrum matches the wavelength range)Angle of incidence 45 ( 3) | p-polarizedNumber of mirrors 2Surface S1 L/10 at 633 nm | 10-5 scratch-dig | flat | dispersive coatingSurface S1 inspection polishing | flat | uncoatedSubstrate material fused silicaFree aperture > 85 % of the diameterDiameter 0.5 '' 1 '' 2 ''Thickness 6.35 mm 6.35 mm 12.7 mmWedge angle < 5 ' 45Special features High throughput, compact compressorAccurate control of higher order dispersion ApplicationsHollow fiber compressionDispersion pre-compensation for sub-7 fs pulsesDispersive mirror set for Hollow ber compressionOptics for dispersion managementOrder code GSM010 GSM020Wavelength range 620 nm - 920 nmTotal GDD < -300 ( 20) fs at 800 nmThroughput > 92 % Supported pulse duration < 7 fs (measured autocorrelation included)Angle of incidence 0 to 10 s-polarized | 0 to 15 p-polarizedNumber of mirrors 5-7 depending on the available mirrorsSurface S1 L/10 at 633 nm | 10-5 scratch-dig | flat | dispersive coatingSurface S2 inspection polishing | flat | uncoatedSubstrate material fused silicaFree aperture > 85 % of the diameterDiameter 1 '' 2 ''Thickness 6.35 mm 9 mm - 12.7 mmWedge angle < 5 'Hollow ber compressor spectrum spectrum supported by the dispersive mirror compressors GSM010 and GSM020. 02468t pulse=3. 9fsDelay ( arb.u.)SH Intensity (arb. u.)Second order interferometric autocorrelation obtained by compressing the continuum generated in a Ne-lled hollow ber by means of the mirror compressor GSM010.Thisbroadbanddispersivemirrorsetcanbe usedforre-compressingpulsesspectrally broadenedinanonlinearmedium(e.g.gas lledHollowber)and/orforpre-compen-sating a dispersive setup. The sets are tested in our labs and supplied with a measured auto-correlation. Sets for different spectral ranges (centeredatwavelengthsbetween650nm and 800 nm) are available. We can customize the compressors based on the spectrum and a description of the dispersive optical path. 46Output pulse duration as a function of the GDD of the opticalsetupfora12fsbandwidth-limitedGaussian input pulse. GDD vs. wavelength of fused silica in the wavelength range 350 nm - 450 nm.200600 1001020304050GDD( fs2)t (fs)Special features High throughput, compact compressorControlled higher order dispersion ApplicationsBroadband dispersion pre-compensation at 400 nmInthe400nmspectralregionthehigher order dispersion of optical materials increases dramaticallyadverselyaffectingtheperfor-manceofprismcompressors.Dispersive mirrors that compensate GDD without intro-ducing undesired higher order dispersion are thus indispensible in compressors for sub-12 fs pulses in the 400 nm range.Dispersive mirror module forsub-12 fs pulse | 400 nmOptics for dispersion managementOrder code GSM012Wavelength range 360 nm - 440 nmAverage GDD/bounce - 20 ( 5) fs at 400 nmReflectance > 99.5 % per bounceSupported pulse duration< 12 fs(if the spectrum matches the wavelength range)Angle of incidence 0 to 10 s-polarized | 0 to 15 p-polarizedNumber of mirrors 2Surface S1 L/10 at 633 nm | 10-5 scratch-dig | flat | dispersive coatingSurface S2 inspection polishing | flat | uncoatedSubstrate material fused silicaFree aperture > 85 % of the diameterDiameter 1''Thickness 6.35 mmWedge angle < 5 ' 47Ultra thin wedge - conceptual drawing GDDvs.materialinsertionfortheultrathinwedges OA124, OA924.20mm100m30 mm100m248'200mSpecial features Ultra thin, small wedge angleApplicationsDispersion fine tuning CEP controlUltra thin wedges for dispersion ne tuningOptics for dispersion managementPairs of ultra thin wedges allow ne, contin-uoustuningoftheGDD.Theextremely accurateGDDcontrolenabledbythinglass wedgesinconjunctionwithbroadband dispersivemirrorsisindispensableforthe generation/manipulation of sub-10 fs pulses. Furthermore, thin glass wedges can be used forroughtuningoftheCarrierEnvelope Phase. Insertion losses can be minimized by using the wedges under Brewster angle. Two piecesarerequiredinordertocompensate the angular dispersion.Order code OA124 OA924Surface S1 L/6 at 633 nm in transmittance | 10-5 scratch-dig | flatSurface S2 L/6 at 633 nm in transmittance | 10-5 scratch-dig | flatCoating on S1 noneCoating on S2 noneSubstrate material fused silicaDimensions 30 mm x 20 mm | minimum thickness 200 mWedge angle2 48 'Adapter none black anodized Al | glued to the wedge | fits into any standard 0.5 mirror holder48Ultra thin AR coated wedge - conceptual drawing GDDvs.materialinsertionfortheultrathinwedges OA324, OA325.20mm100m50 mm 100m8500mSpecial features Broadband AR coatingLarge GDD tuning rangeApplicationsDispersion fine tuning over a wide dynamic rangeOwing to the relatively small angle and large lengthofthesewedgesthedispersioncan benelytunedoverawidedynamicrange. A broadband AR coating minimizes the inser-tion losses at near normal incidence.DuetothelargeGDDtuningrangethese wedges are particularly useful in conjunction withhighdispersionmirrorsorMOSAICTM modules. Two pieces are required in order to compensate the angular dispersion.AR coated wedges for dispersion ne tuningOptics for dispersion managementOrder code OA324 OA325Surface S1 L/6 at 633 nm in transmittance | 10-5 scratch-dig | flatSurface S2 L/6 at 633 nm in transmittance | 10-5 scratch-dig | flatCoating on S1 R < 0.5 % in the range 650 nm - 1040 nm | AOI = 0 - 8Coating on S2 R < 0.5 % in the range 650 nm - 1040 nm | AOI = 0 - 8Substrate material BK7Dimensions 50 mm x 20 mm | minimum thickness 500 mWedge angle8Adapter noneblack anodized Al | glued to the wedge | fits into any standard 1 mirror holder