摘要
利用锁相放大器,结合对Labview软件编程,研究了电流调制激光引入的非稳散粒噪声。通过对噪声功率谱的多次平均和快速傅立叶变换,有效地测量了非稳散粒噪声的频谱特性,研究结果表明非稳散粒噪声具有确定的相位依赖特性。
By using Lock-in amplifier and efficient program with Labview, non-stationary shot noise induced by current modulation to diode laser is studied. After average of power noise spectrum and fast Fourier translation, the power density spectrum of non-stationary shot noise is measured effectively, and the phase dependence characteristic of non-stationary shot noise is proved.
出处
《激光与红外》
CAS
CSCD
北大核心
2004年第3期229-230,共2页
Laser & Infrared
基金
国家自然科学基金(10174047)
山西省留学基金资助
