Research of 3463nm KTiOAsO4 optical parametric oscillator at low repetition frequency

doi:10.3969/j.issn.1001-3806.2010.03.018

In order to study the optical parametric characteristics of KTiOAsO4,according to momentum and energy conservation rule and dispersion equation of the crystal,the phase-matching,gain,effective nonlinear coefficient deft,walkoff and accept angle curves were analyzed in theory through numerical simulation.Type-Ⅱ phase-matching of KTiOAsO4 crystal was adopted and the cutting angle θ=90°,the angle φ=0°.In room temperature,the idle wavelength was 3463nm by experiment.The maximum of single pulse energy was more than 22mJ,the pulse width was no more than 35.3ns,the beam divergence was no more than 8.9mrad and the repeating frequency was from 1Hz to 40Hz.The experimental results show that KTiOAsO4 crystal adapts to generate mid-infrared laser,especially to generate high energy and high peak power mid-infrared laser in future.

1. College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China;

2. Southwest Institute of Technical Physics, Chengdu 610041, China

Received Date: 2009-03-12

Accepted Date: 2009-06-17

Available Online: 2010-05-25

Abstract: In order to study the optical parametric characteristics of KTiOAsO4,according to momentum and energy conservation rule and dispersion equation of the crystal,the phase-matching,gain,effective nonlinear coefficient deft,walkoff and accept angle curves were analyzed in theory through numerical simulation.Type-Ⅱ phase-matching of KTiOAsO4 crystal was adopted and the cutting angle θ=90°,the angle φ=0°.In room temperature,the idle wavelength was 3463nm by experiment.The maximum of single pulse energy was more than 22mJ,the pulse width was no more than 35.3ns,the beam divergence was no more than 8.9mrad and the repeating frequency was from 1Hz to 40Hz.The experimental results show that KTiOAsO4 crystal adapts to generate mid-infrared laser,especially to generate high energy and high peak power mid-infrared laser in future.

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Reference (10)

[1]	REN G G.Status and development trend of airborne laser-based IRCM[J].Laser & Infrared,2000,30(6):323-327(in Chinese).
[2]	WANG Y Z,YAO B Q,JU Y L,et al.1.2W ZnGeP2 optical parametric oscillator[J].High Power Laser and Particle Beams,2005,17(s1):163-166(in Chinese).
[3]	REN G,CAI B W,ZHONG M,et al.Theoretical design of 3μm～4μm KTA optical parametric oscillator[J].Chinese Journal of Lasers,2006,33(s1):222-225(in Chinese).
[4]	CUSSAT-BLANC S,IVANOV A.KTiOPO4,KTiOAsO4,and KNbO3 crystals for mid-infrared femtosecond optical parametric amplifiers:analysis and comparison[J].Appl Phys,2000,B70(7):247-253.
[5]	MARSHALL L R.Efficient multiwatt 2μm～5μm tunable sources[C]//Laser and Hectro-Optics,CLEO'96.New York:IEEE,1996:368-369.
[6]	RUFFING B.All-solid-state cw mode-locked picosecond KTiOAsO4 (KTA) optical parametric oscillator[J].Appl Phys,1998,B67(5):537-544.
[7]	WU R F.Compact mid-IR intracavity OPO[J].Proc SPIE,2001,4595:287-292.
[8]	VYSNIAUSKAS G,BURNS D,BENTE E.Development of a nanosecond high energy KTA OPO system operating 2.9μm[C]//Lasers and Electro-Optics,2002,CLEO'02.New York:IEEE,2002:333.
[9]	WANG B,REN G,LI T,NIU R H.Experimental study of a kalium titanyl arsenate optical parametric oscillator in the mid-infrared band[J].Laser Technology,2007,31(3):225-227(in Chinese).
[10]	FENIMORE D L,SCHEPLER K L,RAMABADRAN U B,et al.Infrared corrected sellmeier coefficients for potassium titanyl arsenate[J].J O S A,1995,B12(5):794-796.

Research of 3463nm KTiOAsO4 optical parametric oscillator at low repetition frequency

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