Watt-level 743 nm source by second-harmonic generation of a cascaded phosphosilicate Raman fiber amplifier
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Published version
Author(s)
Chandran, Anita
Battle, Ronan Anthony
Murray, Robert Theodore
Runcorn, Timothy
Taylor, James R
Type
Journal Article
Abstract
We demonstrate a nanosecond pulsed 743 nm source through second-harmonic generation of a cascaded phosphosilicate Raman fiber amplifier system operating at 1485 nm. The amplifier is pumped by a 1240 nm phosphosilicate Raman fiber amplifier and seeded with a continuous-wave 1485 nm diode. This 1485 nm light is used for second-harmonic generation in periodically poled lithium niobate. Greater than 1 W of average power is generated at 743 nm with a corresponding pulse energy of 220 nJ at a repetition rate of 5 MHz. The source displays excellent beam quality (M2𝑥,𝑦 ≤ 1.18) with ideal parameters for biomedical imaging applications.
Date Issued
2021-11-30
Date Acceptance
2021-11-12
Citation
Optics Express, 2021, 29 (25), pp.41467-41474
ISSN
1094-4087
Publisher
Optical Society of America (OSA)
Start Page
41467
End Page
41474
Journal / Book Title
Optics Express
Volume
29
Issue
25
Copyright Statement
© 2021. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
US Air Force
Identifier
https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-25-41467&id=465517
Grant Number
EP/K503381/1
FA9550-17-1-0197
Subjects
0205 Optical Physics
0906 Electrical and Electronic Engineering
1005 Communications Technologies
Optics
Publication Status
Published
Date Publish Online
2021-11-30