Sensitive detection of acetylene absorption in the visible by using a stabilized AlGaAs diode laser
- 20 January 1993
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 32 (3), 259-262
- https://doi.org/10.1364/ao.32.000259
Abstract
Overtone transitions of C2H2 at ~789 nm are investigated by means of an AlGaAs laser operating in an external optical cavity configuration. Relative amplitude noise is of a few parts in 106 (ppm) and permits an absorption detection limit of 0.2 ppm/km. Self-broadening and air broadening is measured for two components of the observed band [P(11) at 12646.966 and R(5) at 12688.699 cm−1].This publication has 10 references indexed in Scilit:
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