A compact injection-locked single longitudinal mode TEA CO2 laser

K. Silakhori; A. Behjat; F. Soltanmoradi; M. Montazerolghaem; R. Sadr

doi:10.1117/12.611162

23 March 2005 A compact injection-locked single longitudinal mode TEA CO₂ laser

K. Silakhori, A. Behjat, F. Soltanmoradi, M. Montazerolghaem, R. Sadr

Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611162
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic

Abstract

By coupling a CW C0₂ and a TEA CO₂ laser through a grating simultaneously used for both resonators, without any additional optical elements, the CW laser radiation was injected without loss into the TEA CO₂ laser optical cavity. Thus, longitudinal and transverse single mode operation of the TEA CO₂ laser was achieved successfully without any intracavity limiting apertures an evident by the smooth shape of detected pulses. Furthermore, a 3x3 cm cross section single mode beam with unaffected energy of about 4 J/pulse was obtained. This specially designed array due to its observed spectral coincidence of CW radiation and pulsed emission indicates exact alignment of injected CW radiation with the optical axis of TEA CO₂ laser resonator without significant angular deviation. Slight radial deviation, however, did not have any detectable destructive effect on the single mode output signals. This compact and simple structure single mode TEA CO₂ laser with its stability and simple adjustability can be very useful particularly for portable units such as atmospheric lidar instruments.

Citation Download Citation

K. Silakhori, A. Behjat, F. Soltanmoradi, M. Montazerolghaem, and R. Sadr "A compact injection-locked single longitudinal mode TEA CO₂ laser", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); https://doi.org/10.1117/12.611162

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