Optimization on the frequency conversion of LiGaS2 crystal
Based on newly improved optical parameters of the excellent biaxial crystal LiGaS2, its phase-matching upon second harmonic generation and general parametric processes are investigated. In particular, the issue of optimal phase-matching is solved by a computation on figure-of-merit (FM). It is found...
| Published in: | Laser physics Vol. 29, № 9. P. 095403 (1-7) |
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| Other Authors: | , , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000723332 Перейти в каталог НБ ТГУ |
| Summary: | Based on newly improved optical parameters of the excellent biaxial crystal LiGaS2, its phase-matching upon second harmonic generation and general parametric processes are investigated. In particular, the issue of optimal phase-matching is solved by a computation on figure-of-merit (FM). It is found that the effective fundamental wavelength of second harmonic generation entirely covers the 3-5 µm atmosphere window and mid-IR signals of 2-12 µm can be generated by suitable parametric processes. Analysis of the FM and dispersion verifies a quite effective type II parametric process: from a pump in the range of 0.8-1.0 µm to an ultrashort pulse generation at 6-12 µm and also suggests a type I pump at 1.7-1.9 µm for 3-5 µm pulse generation. The computation definitely renders an optimal phase-matching in the XY principal plane for type II configuration, or in a special direction for type I case, far away from the commonly used XZ principal plane. |
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| Bibliography: | Библиогр.: 19 назв. |
| ISSN: | 1054-660X |