Broadly tunable microcomputer-controlled color-center laser for intracavity and extracavity sub-Doppler spectroscopy

Abstract

A microcomputer-controlled color-center laser has been designed for broadband tunability and high-resolution sub-Doppler spectroscopy. The application of the programming language forth for the controlling software provides high versatility and universal applicability to microcomputer-controlled laser spectrometers. Different tuning modes were optimized, allowing continuous-frequency scans over several wave numbers with a resolution of 15 MHz as well as high-resolution scans over 2 GHz with a step width of <100 kHz. Intracavity and extracavity detection techniques were tested on the ν₁ fundamental band of isothiocyanic acid and on the hydrofluoric acid P(4) vibration–rotation transition, indicating a resolution limit of <10⁻⁵ cm⁻¹ for the spectrometer.

© 1985 Optical Society of America

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