A tunable GaAlAs diode laser is used as a chirp signal source, the distance is detected by calculating the beat frequency.
由可调谐半导体激光器产生一个啁啾信号,通过测量拍信号频率计算距离。
2
The high frequency modulation characteristics of GaAs-GaAlAs DH LBDs are analyzed and the results (data and curves) presented.
分析了器件的两种高频调制特性,给出了测量结果——数据和曲线。
3
Using a new kind of liquid-phase epitaxy technology, V-channeled substrate inner stripe visible GaAlAs semiconductor laser with a large optical cavity is fabricated.