The crystal-length and acceptance parameters of SFG with biaxial crystals
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School of Opto-electronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Corresponding author:
YUAN Xiao, xyuan@mail.hust.edu.cn
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Received Date:
2006-04-05
Accepted Date:
2006-06-16
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Abstract
The crystal-length and acceptance parameters of biaxial crystals KTP and LBO used to generate 589nm radiation by means of sum frequency generation(SFG) of 1064nm and 1319nm lasers is analyzed.According to the nonlinear wave-coupling equation of SFG,the exact solutions of low and high power conversion are derived and validated in SFG.On the basis of the solutions,the relationship between power density and crystal-length is given.Acceptance parameters of biaxial crystals are derived and validated from phase matching condition of SFG by means of Taylor expansion.The properties of non-critical phase matching(NCPM) is put forward.It can be seen that sum-frequency conversion efficiency could be increased with appropriate crystal-length,type-ⅠLBO and type-ⅡA KTP are much better and NCPM can be attained for LBO at 32.84℃.
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References
|
[1]
|
CHAO L,YUAN X,ZHU Ch H et al.Phase-matching characteristics of 589 nm radiation generated by SFG with double-axis crystals[J].Laser Technology,2005,29(5):459～461(in Chinese). |
|
[2]
|
ARMSTRONG J A,BLOEMBERGEN N,DUCUING J et al.Interactions between light waves in a nonlinear dielectric[J].Phys Rev,1962,127(6):1918～1939. |
|
[3]
|
FAN Q K,WU C K,MAO Sh Q.Nonlinear optics[M].Nanjing:Jiangsu Science and Technology Press,1989.5～7(in Chinese). |
|
[4]
|
LI G,HAO H L.The influence of crystal length for the efficiency of second harmonic[J].Journal of Beijing Polytechnic University,1992,18(1):73～76(in Chinese). |
|
[5]
|
YAO J Q,SHENG W D,SHI W Q.Accurate calculation of the optimum phase-matching parameters in three-wave interactions with biaxial nonlinear-optical crystals[J].J O S A,1992,9(6):891～902. |
|
[6]
|
MANN G,SEIDEL S,WEBER H.Influence of mechanical stress on the conversion efficiency of KTP and LBO[J].Proc SPIE,1999,3823:289～297. |
|
[7]
|
KATO K.Temperature-tuned 90° phase-matching properties of LiB3O5[J].IEEE J Q E,1994,30(12):2950～2952. |
|
[8]
|
MOORE G T.Resonant sum-frequency generation[J].IEEE J Q E,2002,38(1):12～18. |
|
[9]
|
LI Ch Y,WANG Y G,HUANG L et al.Frequency-doubling study of noncritical phase-matched LBO crystal[J].Journal of Beijing Polytechnic University,2003,29(2):221～224(in Chinese). |
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