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Date Issued: 2004
Keywords: Oscillatorer; Frekvensomformere
Project number: 2004/02159
Permalink: http://hdl.handle.net/20.500.12242/1758
Collection: Rapporter

04-02159.pdf: Size: 3M

Abstract

The topic of this work has been to convert the wavelength of a high energy 1 μm Nd:YAG laser to 2 μm. In order to achieve high efficiency without compromising beam quality, a two-stage system was designed and implemented in the laboratory. The first stage was an optical parametric oscillator (OPO) that converted a narrow 1 μm beam with about 8 mJ energy to a 2 μm signal of relatively high quality. An optical parametric amplifier (OPA) pumped with up to 500 mJ formed the second stage and used the OPO signal as input. Both stages of the master oscillator/power amplifier (MOPA) system were based on the nonlinear crystal KTiOPO4 (KTP). With 500 mJ pump energy, different OPA configurations produced up to 138 mJ signal energy with M2 ≈ 2.3. Numerical simulations of the MOPA configuration gave good agreement with the experimental results.

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dc.contributor	Nordseth, Ørnulf
dc.date.accessioned	2018-10-29T07:01:34Z
dc.date.available	2018-10-29T07:01:34Z
dc.date.issued	2004
dc.identifier	856
dc.identifier.isbn	82-464-0853-4
dc.identifier.other	2004/02159
dc.identifier.uri	http://hdl.handle.net/20.500.12242/1758
dc.description.abstract	The topic of this work has been to convert the wavelength of a high energy 1 μm Nd:YAG laser to 2 μm. In order to achieve high efficiency without compromising beam quality, a two-stage system was designed and implemented in the laboratory. The first stage was an optical parametric oscillator (OPO) that converted a narrow 1 μm beam with about 8 mJ energy to a 2 μm signal of relatively high quality. An optical parametric amplifier (OPA) pumped with up to 500 mJ formed the second stage and used the OPO signal as input. Both stages of the master oscillator/power amplifier (MOPA) system were based on the nonlinear crystal KTiOPO4 (KTP). With 500 mJ pump energy, different OPA configurations produced up to 138 mJ signal energy with M2 ≈ 2.3. Numerical simulations of the MOPA configuration gave good agreement with the experimental results.
dc.description.provenance	Submitted by Hayden Young ... on 2017-11-17T20:20:36Z No. of bitstreams: 1 04-02159.pdf: 2658207 bytes, checksum: 46d64e08452f79cb181981757036ab25 (MD5) ,Approved for entry into archive by Synnove Eifring ... on 2018-10-29T07:01:34Z (GMT) No. of bitstreams: 1 04-02159.pdf: 2658207 bytes, checksum: 46d64e08452f79cb181981757036ab25 (MD5) ,Made available in DSpace on 2018-10-29T07:01:34Z (GMT). No. of bitstreams: 1 04-02159.pdf: 2658207 bytes, checksum: 46d64e08452f79cb181981757036ab25 (MD5) Previous issue date: 2004
dc.language.iso	en
dc.title	Master oscillator power amplifier system for optical parametric conversion of high-energy pulses from 1 to um
dc.subject.keyword	Oscillatorer ,Frekvensomformere
dc.source.issue	2004/02159
dc.source.pagenumber	62