A method of measuring small vibration with an amplitude lower than half that of the wavelength of laser is developed.
研究振动幅度小于激光半波长的微小振动的测量方法。
2
The spectrum of amplitude modulated signal are two half magnitude spectrums of base band signal positive and negative shifted by a carrier or R. F. frequency.
调幅讯号之频谱为一半强度基频讯号之频谱分别正负位移一射频或载波之频率。
3
The results show that only fundamental dark soliton has a frequency jitter half that of bright soliton, and small-amplitude dark soliton has a frequency jitter stronger than that of bright soliton.