Double-pass copper vapor laser master-oscillator power-amplifier systems : generation of flat-top focused beams for fiber coupling and percussion drilling | Macquarie University ResearchOnline

Home

Double-pass copper vapor laser master-oscillator power-amplifier systems : generation of flat-top focused beams for fiber coupling and percussion drilling

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/108330

51 Visitors

54 Hits

2 Downloads

File	Description	Size	Format
DS01	Publisher version (open access)	288 KB	Adobe Acrobat PDF	View/Open

Title: Double-pass copper vapor laser master-oscillator power-amplifier systems : generation of flat-top focused beams for fiber coupling and percussion drilling
Related: IEEE journal of quantum electronics, Vol. 38, Issue 9 (2002), p.1217-1224
DOI: 10.1109/JQE.2002.802447
Publisher: Institute of Electrical and Electronics Engineers
Date: 2002
FoR/RFCD Code(s): 020502 Lasers and Quantum Electronics 090606 Photonics and Electro-Optical Engineering (excl. Communications)
Author/Creator: Coutts, D. W
Description: In this paper, a compact master-oscillator power-amplifier laser system incorporating telescopic beam expansion in a high-gain double-pass amplifier is presented. A miniature (0.5 W) master-oscillator copper vapor laser is used to efficiently extract over 37 W of high-beam-quality (full transverse coherence) output power from a kinetically enhanced nominally 35-W copper vapor laser at 12-kHz pulse repetition frequency. By configuring the oscillator for low coherence output and using a multimode optical fiber between the oscillator and the double-pass amplifier, a high-power (34 W) low-divergence output beam having a well-defined flat-top far-field beam profile was also produced. The flat-top farfield beam profile arises from control of the spatial coherence of a flat-top near-field beam, rather than the usual techniques for producing flattened Gaussian beams from coherent Gaussian beams. Use of the flat-top focused beam for high-speed percussion drilling of high quality 100-μm diameter holes in metals was demonstrated, as well as high-power (34-W average power, 80-kW peak power) damage-free power transmission through 100-μm core diameter step-index optical fibers.
Description: 8 page(s)
Subject Keyword: 020502 Lasers and Quantum Electronics
Subject Keyword: 090606 Photonics and Electro-Optical Engineering (excl. Communications)
Resource Type: journal article
Organisation: Macquarie University. Dept. of Physics and Astronomy

Identifier: http://hdl.handle.net/1959.14/108330
Identifier: ISSN:0018-9197
Identifier: mq-rm-2006008621
Language: eng
Rights: Copyright 2002 IEEE. Reprinted from IEEE journal of quantum electronics. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
Full Text
Reviewed

Macquarie University ResearchOnline

Search

Browse

Highlights

Resources