High peak-power kilohertz laser system employing single-stage multi-pass amplification
Abstract
The present invention describes a technique for achieving high peak power output in a laser employing single-stage, multi-pass amplification. High gain is achieved by employing a very small "seed" beam diameter in gain medium, and maintaining the small beam diameter for multiple high-gain pre-amplification passes through a pumped gain medium, then leading the beam out of the amplifier cavity, changing the beam diameter and sending it back to the amplifier cavity for additional, high-power amplification passes through the gain medium. In these power amplification passes, the beam diameter in gain medium is increased and carefully matched to the pump laser's beam diameter for high efficiency extraction of energy from the pumped gain medium. A method of "grooming" the beam by means of a far-field spatial filter in the process of changing the beam size within the single-stage amplifier is also described.
- Inventors:
- Issue Date:
- Research Org.:
- Kansas State University Research Foundation, Manhattan, KS (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175756
- Patent Number(s):
- 7050474
- Application Number:
- 10/656,343
- Assignee:
- Kansas State University Research Foundation (Manhattan, KS)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
- DOE Contract Number:
- FG03-02ER15285
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Shan, Bing, Wang, Chun, and Chang, Zenghu. High peak-power kilohertz laser system employing single-stage multi-pass amplification. United States: N. p., 2006.
Web.
Shan, Bing, Wang, Chun, & Chang, Zenghu. High peak-power kilohertz laser system employing single-stage multi-pass amplification. United States.
Shan, Bing, Wang, Chun, and Chang, Zenghu. Tue .
"High peak-power kilohertz laser system employing single-stage multi-pass amplification". United States. https://www.osti.gov/servlets/purl/1175756.
@article{osti_1175756,
title = {High peak-power kilohertz laser system employing single-stage multi-pass amplification},
author = {Shan, Bing and Wang, Chun and Chang, Zenghu},
abstractNote = {The present invention describes a technique for achieving high peak power output in a laser employing single-stage, multi-pass amplification. High gain is achieved by employing a very small "seed" beam diameter in gain medium, and maintaining the small beam diameter for multiple high-gain pre-amplification passes through a pumped gain medium, then leading the beam out of the amplifier cavity, changing the beam diameter and sending it back to the amplifier cavity for additional, high-power amplification passes through the gain medium. In these power amplification passes, the beam diameter in gain medium is increased and carefully matched to the pump laser's beam diameter for high efficiency extraction of energy from the pumped gain medium. A method of "grooming" the beam by means of a far-field spatial filter in the process of changing the beam size within the single-stage amplifier is also described.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {5}
}
Works referenced in this record:
High-average-power 2-kHz laser for generation of ultrashort x-ray pulses
journal, January 2002
- Jiang, Yan; Lee, Taewoo; Li, Wei
- Optics Letters, Vol. 27, Issue 11
High-average-power kilohertz-repetition-rate sub-100-fs Ti:sapphire amplifier system
journal, January 1997
- Fu, Q.; Seier, F.; Gayen, S. K.
- Optics Letters, Vol. 22, Issue 10
Generation of 01-TW 5-fs optical pulses at a 1-kHz repetition rate
journal, January 1997
- Sartania, S.; Cheng, Z.; Lenzner, M.
- Optics Letters, Vol. 22, Issue 20
100-fs pulse generation and amplification in Ti:Al_2O_3
journal, January 1991
- Squier, Jeff; Harter, Donald; Salin, François
- Optics Letters, Vol. 16, Issue 5
Sub-20-fs, kilohertz-repetition-rate Ti:sapphire amplifier
journal, January 1995
- Lenzner, M.; Spielmann, Ch.; Wintner, E.
- Optics Letters, Vol. 20, Issue 12
1.1. Terawatt, kilohertz femtosecond laser
conference, January 1999
- Bagnoud, V.; Salin, F.
- Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Edition. CLEO '99. Conference on Lasers and Electro-Optics (IEEE Cat. No.99CH37013)