中国激光, 2018, 45 (12): 1201008, 网络出版: 2019-05-09
被动调Q 双腔双频Nd∶YAG激光器设计及实验 下载: 623次
Design and Experimental Investigation of Passively Q -Switched Two-Cavity Dual-Frequency Nd∶YAG Laser
图 & 表
图 2. 双频激光振荡原理。(a)增益曲线;(b)纵模频率梳;(c)双折射滤光片透射曲线;(d)激光振荡模
Fig. 2. Oscillation principle of dual-frequency laser. (a) Gain curve; (b) longitudinal frequency combs; (c) transmission curves of birefringent filter; (d) laser oscillation modes
图 3. 重复频率、脉冲宽度与抽运功率的关系
Fig. 3. Relationship of repetition rate and pulse width with pump power
图 4. 激光振荡模谱。(a)直线腔未插入Cr4+∶YAG晶体;(b)直角腔未插入Cr4+∶YAG晶体;(c)直线腔插入Cr4+∶YAG晶体;(d)直角腔插入Cr4+∶YAG晶体
Fig. 4. Patterns of laser oscillation modes. (a) Linear cavity without Cr4+∶YAG crystal; (b) right angle cavity without Cr4+∶YAG crystal; (c) linear cavity with Cr4+∶YAG crystal; (d) right angle cavity with Cr4+∶YAG crystal
图 5. 激光输出功率与半波片转角的关系
Fig. 5. Relationship between laser output power and rotary angle of HWP
图 7. 激光输出功率稳定性。(a)直线腔;(b)直角腔
Fig. 7. Stability of laser output power. (a) Linear cavity; (b) right angle cavity
图 8. 抽运功率为2.7 W时,双腔双频被动调Q激光脉冲图。(a)直线腔脉冲序列图;(b)直线腔脉冲波形图;(c)直角腔脉冲序列图;(d)直角腔脉冲波形图
Fig. 8. Passively Q-switched double cavity dual-frequency laser pulses at pump power of 2.7 W. (a) Pulse sequence of linear cavity; (b) pulse waveform of linear cavity; (c) pulse sequence of right angle cavity; (d) pulse waveform of right angle cavity
表 1相关参数取值
Table1. Value of related parameters
|
周叶, 焦明星, 连天虹, 邢俊红, 刘芸, 刘健宁. 被动调