A simplified model for HF chemical laser amplifier

Wen Guang Liu; Xing Chen; Hongyan Wang; Wenyu Li; Weihong Hua

doi:10.1117/12.905605

24 February 2012 A simplified model for HF chemical laser amplifier

Wen Guang Liu, Xing Chen, Hongyan Wang, Wenyu Li, Weihong Hua

Proceedings Volume 8238, High Energy/Average Power Lasers and Intense Beam Applications VI; Atmospheric and Oceanic Propagation of Electromagnetic Waves VI; 82380E (2012) https://doi.org/10.1117/12.905605
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

HF chemical laser with MOPA configuration is a good solution to achieve high output power with high reliability. Kinetic models for HF amplifier are important for prediction and optimization of the performance of MOPA chemical lasers. In this paper, a simplified model for HF chemical laser amplifier is presented. The main processes which are included in the model are: (a) chemical pumping of HF (v=2) and HF (v=1), (b) stimulated transitions and spontaneous emission. (c) relaxation of vibration excited HF molecule by H2,N2 and HF. Some assumptions are taken in this model: (a) the density of H₂, N₂, HF, translational temperature and velocity of gas mixture are averaged across the laser cross section, (b) only two vibration-rotational transitions (2P6, 1P7) occurs in the amplifier, (c) gas temperature does not change during the lasing process in the amplifier. Based on these assumptions, a set of three-level rate equations is formulated and then solved by an iterative technique. Comparison is made with recent experimentally obtained data from a low power discharge-driven CW HF laser with MOPA configuration. It is shown that experimental results are consistent with the calculation from the simplified model.

Citation Download Citation

Wen Guang Liu, Xing Chen, Hongyan Wang, Wenyu Li, and Weihong Hua "A simplified model for HF chemical laser amplifier", Proc. SPIE 8238, High Energy/Average Power Lasers and Intense Beam Applications VI; Atmospheric and Oceanic Propagation of Electromagnetic Waves VI, 82380E (24 February 2012); https://doi.org/10.1117/12.905605

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
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Hydrogen fluoride lasers

Amplifiers

Chemical lasers

Optical amplifiers

Continuous wave operation

Oscillators

Molecules

Show All Keywords

Keywords/Phrases

Search In:

Publication Years