標題: | Theoretical and experimental studies of tunable ultraviolet-blue femtosecond pulses in a 405-nm pumped type I beta-BaB2O4 noncollinear optical parametric amplifier and cascading sum-frequency generation |
作者: | Lee, CK Zhang, JY Huang, JYJ Pan, CL 光電工程學系 Department of Photonics |
公開日期: | 1-八月-2004 |
摘要: | Femtosecond laser pulses that are tunable from 380 to 460 nm were directly generated from a 405-nm-pumped type I beta-BaB2O4 noncollinear optical parametric amplifier (NOPA). A white-light supercontinuum from a CaF2 plate excited by 810-nm pulses was seeded into the NOPA. A theoretical analysis showed that the near-UV-to-blue radiation generated is attributable to cascaded sum-frequency generation (SFG) of the output of the NOPA and the residual fundamental beam at 810 nm. One can tune the blue-UV light by either changing the orientation of the NOPA crystal or adjusting the angle between the pump and the seeding pulse. The optical conversion efficiency from the 405-nm pump to the tunable SFG radiation is more than 5%. (C) 2004 Optical Society of America. |
URI: | http://dx.doi.org/10.1364/JOSAB.21.001494 http://hdl.handle.net/11536/26549 |
ISSN: | 0740-3224 |
DOI: | 10.1364/JOSAB.21.001494 |
期刊: | JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS |
Volume: | 21 |
Issue: | 8 |
起始頁: | 1494 |
結束頁: | 1499 |
顯示於類別: | 期刊論文 |