標題: | Dynamic pulse buildup in continuous-wave passively mode-locked picosecond Ti: Sapphire/DDI and Ti: Sapphire/IR140 lasers |
作者: | Pan, CL Pu, NW Shieh, JM 光電工程學系 Department of Photonics |
公開日期: | 1-八月-1999 |
摘要: | We have studied both theoretically and experimentally the buildup of mode-locked pulses out of noise in continuous wave (cw) passively mode-locked Ti: sapphire lasers with DDI and IR140 dye saturable absorbers, which have significantly different optical properties. The evolution of the laser output from cw, to partial mode-locking, to complete mode-locking was investigated experimentally by measuring the contrast ratio of transient autocorrelation trace, the second-harmonic-generation (SHG) conversion efficiency, the fractional energy, optical and radio frequency (RF) spectra at consecutive delay times using the time-gating technique. Theoretically, we have simulated the pulse buildup numerically by adopting the two-level model for the saturable absorber. The experimental results are in good agreement with the predictions of numerical simulation. |
URI: | http://hdl.handle.net/11536/31193 |
ISSN: | 0577-9073 |
期刊: | CHINESE JOURNAL OF PHYSICS |
Volume: | 37 |
Issue: | 4 |
起始頁: | 361 |
結束頁: | 379 |
顯示於類別: | 期刊論文 |