Pulse stretcher
Abstract
Apparatus for increasing the length of a laser pulse to reduce its peak power without substantial loss in the average power of the pulse is disclosed. The apparatus uses a White cell having a plurality of optical delay paths of successively increasing number of passes between the field mirror and the objective mirrors. A pulse from a laser travels through a multi-leg reflective path between a beam splitter and a totally reflective mirror to the laser output. The laser pulse is also simultaneously injected through the beam splitter to the input mirrors of the optical delay paths. The pulses from the output mirrors of the optical delay paths go simultaneously to the laser output and to the input mirrors of the longer optical delay paths. The beam splitter is 50% reflective and 50% transmissive to provide equal attenuation of all of the pulses at the laser output. 6 figures.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7035924
- Patent Number(s):
- 5309456
- Application Number:
- PPN: US 7-968949
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 30 Oct 1992
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; LASER RADIATION; BEAM SHAPING; BEAM OPTICS; DESIGN; POWER LOSSES; ELECTROMAGNETIC RADIATION; ENERGY LOSSES; LOSSES; RADIATIONS; 426002* - Engineering- Lasers & Masers- (1990-)
Citation Formats
Horton, J A. Pulse stretcher. United States: N. p., 1994.
Web.
Horton, J A. Pulse stretcher. United States.
Horton, J A. Tue .
"Pulse stretcher". United States.
@article{osti_7035924,
title = {Pulse stretcher},
author = {Horton, J A},
abstractNote = {Apparatus for increasing the length of a laser pulse to reduce its peak power without substantial loss in the average power of the pulse is disclosed. The apparatus uses a White cell having a plurality of optical delay paths of successively increasing number of passes between the field mirror and the objective mirrors. A pulse from a laser travels through a multi-leg reflective path between a beam splitter and a totally reflective mirror to the laser output. The laser pulse is also simultaneously injected through the beam splitter to the input mirrors of the optical delay paths. The pulses from the output mirrors of the optical delay paths go simultaneously to the laser output and to the input mirrors of the longer optical delay paths. The beam splitter is 50% reflective and 50% transmissive to provide equal attenuation of all of the pulses at the laser output. 6 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 03 00:00:00 EDT 1994},
month = {Tue May 03 00:00:00 EDT 1994}
}