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Ti:sapphire laser spectrometer for Doppler-limited molecular spectroscopy

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Abstract

A newly developed Ti:sapphire laser spectrometer is described that performs wideband Doppler-limited molecular spectroscopy at wavelengths ranging from 755 to 895 nm. Spectrometer performance was evaluated by use of the spectra of acetylene, 13C-acetylene, and oxygen. A nearly continuous spectral recording over 300 cm−1 was carried out with a relatively simple frequency scanning system. With a tone-burst frequency-modulation technique, the spectrometer’s minimum detectable absorption ΔI/I was 5 × 10−5 at a time constant of 100 ms. The absolute accuracy of the wave-number measurements with a precise wavemeter was 1.5 × 10−3 cm−1 for the 790-nm 13C-acetylene lines.

© 1994 Optical Society of America

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