摘要
从理论和实验上研究了残余幅度噪声(RAM)对谐波探测的影响。通过对Harvey-Myatt外腔式二极管激光器进行低频(1KHz)电压调制和高次(2f 以上)谐波探测获得了10- 6的最小探测吸收率。
With 1kHz voltage modulation and harmonics detection, residual amplitude modulation (RAM) noise were carried out experimentally. We find that even in higher (than second) harmonic the RAM is dominant in the background signal for the influence of excess noise (1/f noise) and nonlinearity in the voltage tuning using a Harvey Myatt external diode laser. As a result, the minimum detectable absorbances are in the orde of 10 -6 in higher harmonic detection.
出处
《量子光学学报》
CSCD
1999年第4期239-243,共5页
Journal of Quantum Optics
基金
山西省留学归国基金
太原市科技启明星计划资助
关键词
残余幅度噪声
电压调制
谐波探测
激光器
external diode laser
RAM
voltage modulation
harmonics detection
