论文部分内容阅读
基于有差伺服调节技术,实现了外置光学谐振腔的共振频率与钛宝石激光器工作频率的锁定。该技术采用压电陶瓷作为执行元件,通过对压电陶瓷的调制,实现了对透射激光功率的调制,并由锁相放大器解调获得伺服信号,该伺服信号经过高压放大器放大后控制压电陶瓷的伸缩来调控谐振腔的腔长,从而使腔的共振频率锁定在激光频率上。当激光工作于单一频率时,谐振腔的谐振频率可以长时间地与激光频率保持锁定,锁定后腔的透射光功率相对起伏的稳定性为2%。当激光频率扫描时,谐振腔的谐振频率可以在2GHz范围内不间断地与激光频率保持锁定。
Based on the poor servo adjustment technology, the resonant frequency of the external optical resonator is locked with the operating frequency of the Ti: sapphire laser. The piezoelectric ceramic technology as the executive component, through the modulation of the piezoelectric ceramic, to achieve the modulation of the transmitted laser power, and obtained by the lock-in amplifier demodulation servo signal, the servo signal amplified by a high-pressure amplifier to control the piezoelectric ceramic Of the telescope to regulate the cavity length, so that the resonant cavity frequency locked in the laser frequency. When the laser operates at a single frequency, the resonance frequency of the resonator can be locked with the laser frequency for a long time, and the stability of the transmitted light power after locking is 2% relative to the fluctuation. When the laser frequency sweeps, the resonance frequency of the resonator can be kept locked to the laser frequency over the 2 GHz range without interruption.