Acta Optica Sinica, Volume. 30, Issue 9, 2634(2010)
Research on Static Frequency Doubling in RefractiveIndex Modulated Crystals
Starting from the Maxwell equations, a set of coupled planewave equations of frequency doubling in the refractiveindex modulated medium is derived, and a solution to the equations is given under the smallsignal approximation. The smallsignal solution, a form composed of Fresnel functions presents a special dephasing structure which is different from the typical sinc function. Analysis shows that the refractiveindex modulated crystal has a larger phase matching bandwidth than that in a normal nonlinear crystal, so possesses larger temperature, phase matching ange and spectral bandwidths; however the total conversion efficiency has to make sacrifice to pay for this enhancement of bandwidths. It should be noted that the dephasing function can be flattened with a suitable modulating parameter, which will lower the sensitivities of the frequency doubling crystal to erratic shifts of working points out of any thermal and mechanical reasons. It is found by a simulation in the high conversion efficiency case, the characteristics of dephasing function are still in accordance with the result from the smallsignal approximation, except rendering a magnitude difference which depends on coupling strength.
Get Citation
Copy Citation Text
Huang Jinjer, Mao Beili, Dai Han, Shen Tao, Zhang Liuyang. Research on Static Frequency Doubling in RefractiveIndex Modulated Crystals[J]. Acta Optica Sinica, 2010, 30(9): 2634
Category: Nonlinear Optics
Received: Sep. 1, 2009
Accepted: --
Published Online: May. 15, 2014
The Author Email: Jinjer Huang (E-mail)