Clar H J, Schieder R, Reich M, Winnewisser G
Appl Opt. 1989 May 1;28(9):1648-56. doi: 10.1364/AO.28.001648.
For very high precision molecular spectroscopy we use a tunable diode laser which is frequency locked to an internally coupled Fabry-Perot interferometer (icFPI). The spectra are calibrated by means of the interference pattern of an iodine stabilized He-Ne reference laser which is simultaneously coupled into the icFPI. In this paper the exact relation between the diode laser frequency and the He-Ne fringe number is derived and a convenient calibration procedure yielding a frequency accuracy of 5 x 10(-5) cm(-1) at 10 microm is described.
对于非常高精度的分子光谱学，我们使用可调谐二极管激光器，其频率锁定到一个内部耦合的法布里 - 珀罗干涉仪（icFPI）。光谱通过碘稳定的氦氖参考激光器的干涉图样进行校准，该参考激光器同时耦合到icFPI中。本文推导了二极管激光器频率与氦氖条纹数之间的精确关系，并描述了一种简便的校准程序，在10微米波长处可实现5×10⁻⁵厘米⁻¹的频率精度。
