Center wavelength | Output power |
---|---|
4.56um | 150mw |
调谐特性
一,光谱图
二,功率曲线
三,功率稳定性
四.波长稳定性
五,光斑
六、TDLAS气体分析
激光准直输出,通过10cm直通气体吸收池,然后打到MCT探测器上,探测到的信号接入PREAMP前置放大端,再经过锁相放大器调制解调,通过DACOUT模拟输出端输出二次谐波信号。
二次谐波波形图:
10%浓度CO
200ppm浓度CO
4.56um低功耗QCL 测试报告 2023/04/26
1. 激光输出测试
1.1. Output Power & Wavelength vs. Current
1.2. Wavelength vs Temperature
Frequency Stability
1h measurement after 30 mins Warm-up
Power stability
Measured after 10 dB attenuation by a photodiode.
S_pol measured after a silicon PBS
Short term power stability (5 mins)
Power/Current linearity
Nonlinearities may come from interference inside the Laser diode.
Beam quality
600 mm
1000 mm
Modulation Character