Magnetic modulation of subsonic COIL

0359362 - FZÚ 2012 RIV US eng C - Conference Paper (international conference)
Beránek, Jaroslav - Rohlena, Karel
Magnetic modulation of subsonic COIL.
Proceedings of 18. International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers. Bellingham: SPIE, 2010 - (Dreischuh, T.; Atanasov, P.; Sabotinov, N.), 77510L/1-77510L/6. Proceedings of SPIE, 7751. ISBN 9780819482426. ISSN 0277-786X.
[International Symposium on Gas Flow, Chemcal Lasers and High-Power Lasers /18./. Sofia (BG), 30.08.2010-03.09.2010]
Institutional research plan: CEZ:AV0Z10100523
Keywords : chemical lasers * subsonic COIL * magnetic modulation
Subject RIV: BH - Optics, Masers, Lasers
http://dx.doi.org/10.1117/12.880975

A variable magnetic field was incorporated into a 1D model of subsonic COIL model to include its influence on the stimulated emission cross-section and other lasing parameters. The model includes a fairly complete chemici kintetics. The variable magnetic field transforms the CW regime in a pulsed operation. The numerical procedure gives a possibility to tackle an arbitrary temporal dependence of the imposed magnetic field and to calculate directly the response of the laser output. The calculation was focused on the data measured with the subsonic version of the COIL device in the Institute of Physics, Prague, modulated by a saw-tooth magnetic pulses. Although the model gives a reasonable agreement for the CW regime it is difficult to match the exact shape of the measured magnetically switched laser pulses with the calculated one. In this contribution we shall demonstrate various additional refinements of the model to improve the agreement with the measured pulse shape.
Permanent Link: http://hdl.handle.net/11104/0197159