Q-switched multikilowatt CO2 laser system excited by microwaves

Ulrich Bielesch; M. Budde; M. Fischbach; Bernhard Freisinger; Johannes Heinrich Schaefer; Juergen Uhlenbusch; Wolfgang Vioel

doi:10.1117/12.144686

4 May 1993 Q-switched multikilowatt CO2 laser system excited by microwaves

Ulrich Bielesch, M. Budde, M. Fischbach, Bernhard Freisinger, Johannes Heinrich Schaefer, Juergen Uhlenbusch, Wolfgang Vioel

Author Affiliations +

Proceedings Volume 1810, 9th International Symposium on Gas Flow and Chemical Lasers; (1993) https://doi.org/10.1117/12.144686
Event: Ninth International Symposium on Gas Flow and Chemical Lasers, 1992, Heraklion, Greece

Abstract

Microwave excitation of laser gases allows the deposition of high excitation energy densities into an active medium of relatively large diameter and volume. To take advantage of low cost commercially available generators a microwave frequency of (upsilon) equals 2.45 GHz was chosen. An oscillator amplifier system with TEM₀₀ beam quality and tunable wavelength is used in order to obtain a cw laser output of maximum P_L equals 7 kW. The output of a dc discharged, diffusion cooled CO₂ laser oscillator operating in the TEM₀₀ mode with an output power of 265 W (cw) and an average power of maximum 140 W in the pulsed mode is fed into an amplifier consisting of 24 modules, excited by two magnetrons of 2.7 kW power each. The discharge diameter of an amplifier module is d equals 0.051 m and the active length for one discharge module is 1 equals 0.3 m, yielding an active gain path of L_akt equals 7.2 m. In the pulsed mode the amplifier delivers a peak power of up to 1.9 MW at a repetition rate of 10 kHz.

Citation Download Citation

Ulrich Bielesch, M. Budde, M. Fischbach, Bernhard Freisinger, Johannes Heinrich Schaefer, Juergen Uhlenbusch, and Wolfgang Vioel "Q-switched multikilowatt CO2 laser system excited by microwaves", Proc. SPIE 1810, 9th International Symposium on Gas Flow and Chemical Lasers, (4 May 1993); https://doi.org/10.1117/12.144686

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available