Electron beam-switched discharge for rapidly pulsed lasers

Title: Electron beam-switched discharge for rapidly pulsed lasers

Full Record
Other Related Research

Abstract

A method and apparatus are designed for electrical excitation of a laser gas by application of a pulsed voltage across the gas, followed by passage of a pulsed, high energy electron beam through the gas to initiate a discharge suitable for laser excitation. This method improves upon current power conditioning techniques and is especially useful for driving rare gas halide lasers at high repetition rates.

Inventors:: Pleasance, L.D.; Murray, J.R.; Goldhar, J.; Bradley, L.P.

Issue Date:: 1979-12-11

OSTI Identifier:: 7062077

Assignee:: Dept. of Energy TIC; ERA-06-005180; EDB-81-005698

DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; GAS LASERS; EXCITATION; DESIGN; GASES; HALIDES; RARE GASES; ELEMENTS; ENERGY-LEVEL TRANSITIONS; FLUIDS; HALOGEN COMPOUNDS; LASERS; NONMETALS; 420300* - Engineering- Lasers- (-1989)

Citation Formats


                    Pleasance, L.D., Murray, J.R., Goldhar, J., and Bradley, L.P. Electron beam-switched discharge for rapidly pulsed lasers.  United States: N. p., 1979. 
        Web.

Copy to clipboard


                    Pleasance, L.D., Murray, J.R., Goldhar, J., & Bradley, L.P. Electron beam-switched discharge for rapidly pulsed lasers.  United States.

Copy to clipboard


                    Pleasance, L.D., Murray, J.R., Goldhar, J., and Bradley, L.P. Tue .  
        "Electron beam-switched discharge for rapidly pulsed lasers".  United States.

Copy to clipboard


                    
@article{osti_7062077,

  title        = {Electron beam-switched discharge for rapidly pulsed lasers},

  author       = {Pleasance, L.D. and Murray, J.R. and Goldhar, J. and Bradley, L.P.},

  abstractNote = {A method and apparatus are designed for electrical excitation of a laser gas by application of a pulsed voltage across the gas, followed by passage of a pulsed, high energy electron beam through the gas to initiate a discharge suitable for laser excitation. This method improves upon current power conditioning techniques and is especially useful for driving rare gas halide lasers at high repetition rates.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1979},

  month        = {12}

}

Copy to clipboard

Patent:

Search for the full text at the U.S. Patent and Trademark Office

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Patents and OSTI.GOV collections:

Electron beam switched discharge for rapidly pulsed lasers

Patent Bradley, L.P.; Goldhar, J.; Murray, J.R.; ...

Method and apparatus are described for electrical excitation of a laser gas by application of a pulsed voltage across the gas, followed by passage of a pulsed, high energy electron beam through the gas to initiate a discharge suitable for laser excitation. This method improves upon current power conditioning techniques and is especially useful for driving rare gas halide lasers at high repetition rates.
Electron beam switched discharge for rapidly pulsed lasers

Patent Pleasance, Lyn D. (Livermore, CA); Murray, John R. (Danville, CA); Goldhar, Julius (Walnut Creek, CA); ...

Method and apparatus for electrical excitation of a laser gas by application of a pulsed voltage across the gas, followed by passage of a pulsed, high energy electron beam through the gas to initiate a discharge suitable for laser excitation. This method improves upon current power conditioning techniques and is especially useful for driving rare gas halide lasers at high repetition rates.
Full Text Available
Gain and discharge characteristics of electron-beam switched KrF lasers

Conference Shimazaki, H.; Nakamura, S.; Obara, M.; ... - AIP Conf. Proc.; (United States)

Although small-signal gain measurements of rare-gas halide lasers were recently carried out only for direct electron-beam-pumped and self-sustained-discharge pumped lasers, there is no report on the gain measurement of the electron-beam-switched-discharge KrF laser. Electron-beam switched discharge pumped KrF lasers were studied to obtain detailed experimental data on the relationship between the discharge stability and the small-signal gain coefficient g/sub o/. As a result, a high gain coefficient g/sub o/ in excess of 11%/cm was obtained and the relationship between the discharge stability and the small-signal gain coefficient was clarified. The electron-beam-switched-discharge pumping which needs no gap switches in the dischargemore »« less
Time variability of directionality properties of pulsed EB-EDL (electron beam-electric discharge laser) N/sub 2/-CO/sub 2/ lasers. Technical report

Technical Report Jones, R.W.

Measurements were made of the time dependence of radiation intensity in various parts of the far-field patterns of pulsed e-beam electric discharge laser (EB-EDL) N/sub 2/-CO/sub 2/ lasers. It was found that the relative intensity of the early-time gain-switch spike as compared to the later-time main pulse was different in different portions of the far-field pattern when the resonator alignment was of fully decentered type.
Flow and discharge characteristics of electron-beam-controlled pulsed lasers

Journal Article Srivastava, B.N. (Avco Everett Research Laboratory, Inc., Everett, Mass.); Theophanis, G. (Avco Everett Research Laboratory, Inc., Everett, Mass.; California, University, Los Alamos, N. Mex.) - AIAA Pap.; (United States)

Discharge and flow characteristics of an electron-beam-controlled pulsed CO/sub 2/ laser is investigated. Several specific discharge issues for the device, such as ionization source uniformity, electric field uniformity, energy deposition uniformity and discharge confinement are addressed by obtaining a self-consistent numerical solution of the laser discharge problem. These solutions include the effects of finite electron beam, finite electrode length and arbitrary electrode shape. The effect of coupling between the cavity acoustics and the discharge is modelled using a general transient 2-dimensional nonlinear approach. Results are presented to demonstrate the effect of this coupling during a pulse time.

Similar Records