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Efficient, high-repetition rate, blue source using a compact CR:LiSAF laser

Agate, B. and Kemp, A. and Brown, C.T.A. and Keller, U. and Sibbett, W. (2002) Efficient, high-repetition rate, blue source using a compact CR:LiSAF laser. In: Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the. Institute of Electrical and Electronics Engineers Inc., pp. 338-339. ISBN 1557527067

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Abstract

Summary form only given. We report a compact, directly diode-pumped Cr:LiSAF laser as an alternative pump source. This laser has an electrical-to-optical efficiency in excess of 1% and produces transform-limited pulses of ∼150 fs in duration at ∼865 nm. The average power is 35 mW and the repetition rate is ∼250 MHz, which implies modest peak powers of less than 1 kW. At these low power levels, efficient frequency doubling usually requires complex arrangements, especially if the pulse duration is to be preserved. In this paper we describe the use of a relatively thick doubling crystal in a single-pass, extra-cavity arrangement. Although the second harmonic pulses suffer temporal broadening, this represents an effective way to achieve efficient frequency conversion in a simplified configuration. The nonlinear crystal was potassium niobate (KNbO3) cut for non-critical phase matching at 860 nm and 22°C.

Item type: Book Section
ID code: 9116
Keywords: chromium, lithium compounds, optical harmonic generation, potassium compounds, solid lasers, strontium compounds, average power, compact Cr, LiSAF laser, directly diode-pumped Cr, efficient frequency conversion, efficient high-repetition rate blue source, electrical-to-optical efficiency, frequency doubling, low power levels, noncritical phase matching, nonlinear crystal, peak powers, pump source, relatively thick doubling crystal, repetition rate, second harmonic pulses, single-pass extra-cavity arrangement, temporal broadening, transform-limited pulses, KNbO3, LiSrAlF6, Cr, Optics. Light
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Institute of Photonics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 13 Nov 2009 12:29
    Last modified: 07 Dec 2013 06:49
    URI: http://strathprints.strath.ac.uk/id/eprint/9116

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