All-Solid-State Near-Infrared and Blue Femtosecond Laser System

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（2）
• 页码范围: 203-204
• 页数: 2页
• 分类号: O4
• 语种: 英文

摘要

We investigate an all-solid-state continuous wave (cw) green (532nm), femtosecond near-infrared (823.1 nm)and blue (402nm) laser system which is pumped by a diode-laser-pumped intracavity frequency-doubled and all-self-structuring cw Nd:YVO4/KTP 532nm green laser. The cavity parameters of the Nd:YVO4/KTP laser have been optimized and the maximum 5.6 W TEM00 green laser is obtained at a 22 W pump power with an optical-optical conversion efficiency of 25.5%. A Ti:Sapphire laser and nonlinear second-harmonic generation by a crystal BBO is used to obtain different wavelengths. A femtosecond laser with an average output power of 300mW at 823.1 nm and 73mW at 402nm is obtained when the green pump power is 2.5 W. The spectral full width at haft maximum are 32.3 nm and 5.1 nm, which can sustain the pulses of 22fs and 33.3fs, respectively.