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M. YIN1,* , Y. GUO1, X. ZHONG1
- College of Information Science & Technology, Chengdu University of Technology, 610059, Chengdu, China
Quasi-phase matching (QPM) broadband second-harmonic generation (SHG) has attracted much attention, however, the effect of polarization on QPM broadband SHG is not clear in periodically poled lithium tantalate (PPLT). In this paper, four QPM types broadband SHGs are studied in PPLT. Group-velocity matching (GVM) fundamental wavelength and SHG bandwidth vary with polarization varying. GVM fundamental wavelength and SHG bandwidth are positively correlated with temperature for some QPM types and negatively for another types. Temperature sensitivity of GVM fundamental wavelength for type Ⅰ is maximum and that for type 0 is minimum. Results can be used in new wavelength broadband SHG..
Quasi-phase matching, Second-harmonic generation, Broadband, Periodically poled lithium tantalate, Group-velocity matching.
Submitted at: April 14, 2017
Accepted at: Aug. 9, 2018
M. YIN, Y. GUO, X. ZHONG, Effect of polarization on broadband second-harmonic generation in periodically poled lithium tantalate, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 7-8, pp. 363-370 (2018)
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