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Military University of Technology Institute of Optoelectronics. Advanced Solid-State Lasers (27 Oct – 1 Nov 2013 – Paris, France) ATu3A.30. Paper no. Polycrysta l ine Cr 2+ : ZnSe Laser Pumped by Efficient Tm:YLF Oscillator

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Paper no.

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  1. MilitaryUniversity of Technology Institute of Optoelectronics Advanced Solid-State Lasers (27 Oct – 1 Nov 2013 – Paris, France) ATu3A.30 Paper no. Polycrystaline Cr2+:ZnSe Laser Pumped by Efficient Tm:YLF Oscillator L. Gorajek, J. Jabczynski, M. Kaskow Institute of Optoelectronics, MilitaryUniversity of Technology ,Warsaw, Poland Abstract Efficient high peak power Tm:YLF laser emitting 5.5-mJ pulses of duration about 11ns was presented. Slope efficiency was about 50% according to incident pump power. 3mJ of output energy for Cr:ZnSe laser was achieved. Cr:ZnSepolycrystal. Tm:YLF3.5% 3x10 mm Lrez = 120 mm Outputcoupler: T = 30% Rcurv = 200 mm Laser setup Cr:ZnSepolycrystal2.64 x 6.50 x 7.98 mm NCr = 2.7 x 1018 cm-3 Lrez = 75 mm Outputcoupler: T = 3% Dichroic mirror Rcurv = 200 mm Microscopicimage of Cr:ZnSepolycrystal. Outputpowervs. Pump power for free-runningTm:YLF laser. Beamqualitymeasurements. 1 mm Output spectrum of Tm:YLF laser. Output energy vs. pump energy for free-runningCr:ZnSe laser. Output energy vs. Pump energy for Tm:YLF laser inpulsedregime. Generation spectrum of Cr:ZnSe laser infree-runningregime. • Summary • Slopeefficiency of Tm:YLF laser was 50% (according to incident pump power. • 5.5 mJoutput energy in 11.5 nspulsescorresponds to 0.5 MW of peakpower • Nearlydiffractionlimmitedoutputbeam • 3 mJ of output energy inpolycrystalineCr:ZnSe medium Half-megawattpulse of Tm:YLF laser (energy: 5.5 mJ). Institute of OptoelectronicsMUT ul. gen. S. Kaliskiego 2, 00-908 Warsaw, Poland phone: (+48 22) 683 94 30, fax: (+48 22) 666 89 50 www.ioe.wat.edu.pl Thisresearchhasbeensupported by: – Foundation for Polish Science – PolishMinistry of Science and HigherEducation Project No. UMO-2012/06/M/ST/00425

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