Light-induced cooling of active medium of CW TEA CO2 laser

Viktor V. Azharonok; Irina I. Filatova; Vladimir D. Shimanovich

doi:10.1117/12.517995

6 October 2003 Light-induced cooling of active medium of CW TEA CO₂ laser

Viktor V. Azharonok, Irina I. Filatova, Vladimir D. Shimanovich

Proceedings Volume 5137, International Conference on Lasers, Applications, and Technologies 2002: Advanced Lasers and Systems; (2003) https://doi.org/10.1117/12.517995
Event: International Conference on Lasers, Applications, and Technologies 2002, 2002, Moscow, Russian Federation

Abstract

In the present paper a gas kinetic temperature change of active medium of high-power TEA CO₂ laser that is conditioned by a self-influence of laser radiation on plasma parameters, is investigated. The active medium was pumped by a self-sustained transverse glow discharge. The gas kinetic temperature T_g of plasma has been deduced from the half-width of rotationally unresolved spectral bands of the (2+)N₂. It is shown that the laser radiation propagation through the inverse medium causes a cooling of the active medium. The degree of the gas mixture cooling δTg≈5K at W~2.2 W/2.2 W/cm³ and δTg≈60 K at W~4.4 W/cm³. We suppose that the effect of the active medium cooling is connected with the change of a kinetic of V-T relaxation in asymmetrical mode of the active medium cooling is connected with the change of a kinetic of V-T relaxation in asymmetrical mode of the active medium cooling is connected with with the change of a kinetic of V-T relaxation in asymmetrical mode of vibrationally-excited CO₂ molecule when the lasing takes place in the laser resonator. Analytical estimation of light-induced temperature change δT*_g of fast-flow TEA CO₂-laser active medium are compared with the experimental ones.

Citation Download Citation

Viktor V. Azharonok, Irina I. Filatova, and Vladimir D. Shimanovich "Light-induced cooling of active medium of CW TEA CO₂ laser", Proc. SPIE 5137, International Conference on Lasers, Applications, and Technologies 2002: Advanced Lasers and Systems, (6 October 2003); https://doi.org/10.1117/12.517995

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

Molecules

Resonators

Molecular lasers

Temperature metrology

Laser resonators

Show All Keywords

Keywords/Phrases

Search In:

Publication Years