A High-Power Q-Switched CO2 Laser Using Intense Pulsed RF Discharge Excitation

Autor:	Sakai Tatsuhiko, Naoya Hamada
Rok vydání:	1996
Předmět:	Pulse repetition frequency Chemistry business.industry General Engineering General Physics and Astronomy Laser Q-switching Power (physics) law.invention Pulse (physics) Chopper Optics law Laser power scaling business Excitation
Zdroj:	Japanese Journal of Applied Physics. 35:3428
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.35.3428
Popis:	A compact high-power Q-switched CO2 laser has been developed using a combination of intense pulsed rf (13.56 MHz) discharge excitation and a high-speed rotating Q-switch chopper. Performance characteristics have been investigated as functions of Q-switching velocity, input discharge energy density and laser gas composition. A pulse peak power of 300 kW and an average power of 740 W at 10 kHz pulse repetition frequency have been obtained simultaneously for a Q-switched laser based on a CO2 laser with 1.1 kW average power. By decreasing the repetition frequency to 4 kHz, the peak power was enhanced to above 500 kW. An analytical model describing the unique features of the Q-switched CO2 laser has also been developed for quantitative evaluation of the laser performance. Good agreement was obtained between the theoretical model and experimental results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::18f5271ff51e1342ea0619d93f0c2ab5 https://doi.org/10.1143/jjap.35.3428 Zobrazit plný text záznamu