DURATION LIMIT OF LASER PULSES EMITTED FROM A Ce-DOPED CRYSTAL SHORT CAVITY

Le Hoang Hai (Le Quy Don University of Engineering, 100 Hoang Quoc Viet Rd., Hanoi)
Nguyen Dai Hung (Institute of Physics and Electronics, 10 Dao Tan Str., Ba Dinh Dist., Hanoi)
Hoang Huu Hoa (University of Hue, 2 Le Loi Str., Hue)
Alex V. V. Quema (Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444-8585)
Nobuhiko Sarukura (Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444-8585)

ASEAN Journal on Science and Technology for Development
Vol. 24 No. 1-2 (2007): ASEAN Journal on Science and Technology for Development (AJSTD)

Based on the rate equation set for broadband cavities, the dependence of pulse duration on cavity and pumping parameters is analyzed. The cavity uses a Ce-doped crystal as a gain medium. Computation results show the variation of the pulse width with the change of cavity length, mirror reflectivity, pumping energy and pumping pulse duration. A significant influence of multiple-pulse operation in limiting pulse duration is realized and a pulse-width of the order 200 ps is found to be the limit for the direct generation of ultraviolet single picosecond pulses from a Ce:LLF short cavity.