Effects of absorption and relaxation on CO2 impurities in pulsed DF/HF lasers

Michail A. Azarov; V. A. Drozdov; Georgiy A. Troshchinenko

doi:10.1117/12.334497

22 December 1998 Effects of absorption and relaxation on CO₂ impurities in pulsed DF/HF lasers

Michail A. Azarov, V. A. Drozdov, Georgiy A. Troshchinenko

Proceedings Volume 3574, XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1998) https://doi.org/10.1117/12.334497
Event: Twelfth International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 1998, St. Petersburg, Russian Federation

Abstract

Influence of CO₂ impurity within the laser medium on energy and spectral characteristics of the pulsed chemical chain DF-laser has been investigated experimentally. It is shown, that the mechanism of CO₂ influence on the output laser characteristics and their sensitivity to CO₂ concentration depends in a strong degree on lasing conditions. The influence of the CO₂ molecule is determined only by relaxation processes and the sensitivity is minimal when the transition only between the low vibrational levels radiate in wavelength range of 3.6 - 4.2 micrometer due to low resonator quality. With low CO₂ concentration and use of the high quality resonator the DF-laser generates on up to ten vibrational transitions in the wavelength range of 3.6 - 5.0 micrometer, thus the high efficiency of transformation of the reserved chemical energy in lasing is provided. In this case the CO₂ influence on the DF-laser characteristics is defined both the relaxation processes and to greater degree the CO₂ absorption in the range of 4.2 - 4.4 micrometer, and the sensitivity grows almost by the order of magnitude. On the basis of the investigations carried out the requirements to a degree of clearing of a laser medium from technological CO₂ impurity for achievement of high specific energies of HF- and DF-lasers are determined [(CO2) less than 0.4 and 0.005%, correspondingly].

Citation Download Citation

Michail A. Azarov, V. A. Drozdov, and Georgiy A. Troshchinenko "Effects of absorption and relaxation on CO₂ impurities in pulsed DF/HF lasers", Proc. SPIE 3574, XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (22 December 1998); https://doi.org/10.1117/12.334497

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Carbon dioxide lasers

Carbon dioxide

Resonators

Deuterium fluoride lasers

Absorption

Hydrogen fluoride lasers

Fluorine

Show All Keywords

Keywords/Phrases

Search In:

Publication Years