Abstract

An infrared diode laser is frequency stabilized to a tunable internally coupled Fabry-Perot interferometer (icFPI). Diode laser spectra are digitally recorded utilizing a step-by-step tuning and stabilization sequence of the icFPI. Fringes from a frequency stabilized reference He–Ne laser are used to control digital sampling steps. While improving significantly the spectral SNR, this method is combined with a confocal Fabry-Perot etalon, thus providing a frequency scale accuracy of ∼3.5 × 10⁻⁵ cm⁻¹ over a 1-cm⁻¹ scan. The method is shown to be consistent with high resolution Fourier transform and heterodyne spectroscopy results.

© 1989 Optical Society of America

High precision frequency calibration of tunable diode lasers stabilized on an internally coupled Fabry-Perot interferometer

Hans-Jörg Clar, R. Schieder, M. Reich, and G. Winnewisser
Appl. Opt. 28(9) 1648-1656 (1989)

Sampling of diode laser spectra by a confocal etalon fringe pattern

Christophe Nicolas and Jonathan C. Sproul
Appl. Opt. 29(6) 798-801 (1990)

Internally coupled Fabry-Perot interferometer for high precision wavelength control of tunable diode lasers

M. Reich, R. Schieder, H. J. Clar, and G. Winnewisser
Appl. Opt. 25(1) 130-135 (1986)

Tunable diode laser control by a stepping Michelson interferometer

A. Valentin, C. Nicolas, L. Henry, and Arlan W. Mantz
Appl. Opt. 26(1) 41-46 (1987)

High-sensitivity mid-infrared heterodyne spectrometer with a tunable diode laser as a local oscillator

Frank Schmülling, Bärbel Klumb, Markus Harter, Rudolf Schieder, Bernd Vowinkel, and Gisbert Winnewisser
Appl. Opt. 37(24) 5771-5776 (1998)