大范围高分辨率法-珀干涉仪

Fabry-Parot interferometer with large range and high resolution

法 珀干涉仪有较高的分辨率 ,但是由于受到激光器模间隔的限制 ,测量范围较小。介绍了使用换模锁定法对其进行扩展 ,实现了具有较大测量范围及纳米分辨率和测量精度的法 珀干涉仪 ,扩展了法

Fabry Parot interferometer has very high resolution. But the measurement range is a little smaller for the limit of the tuning range of the laser. The method of locking the slave laser to the successive resonance frequencies of the F P cavity to improve the measurement range is introduce. The Fabry Parot interferometer with larger measurement range and nanometer resolution is realized, and extends the measurement range largely.