Coherent combining of high brightness tapered amplifiers for efficient non-linear conversion

P. Albrodt, Muhammad Tahir Jamal, A. K. Hansen, Ole Bjarlin Jensen, G. Blume, K. Paschke, P. Crump, P. Georges, G. Lucas-Leclin*

*Corresponding author for this work

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Abstract

We report on a coherent beam combination of three high-brightness tapered amplifiers, which are seeded by a single-frequency laser at λ = 976 nm in a simple architecture with efficiently cooled emitters. The maximal combined power of 12.9 W is achieved at a combining efficiency of > 65%, which is limited by the amplifiers’ intrinsic beam quality. The coherent combination cleans up the spatial profile, as the central lobe’s power content increases by up to 86%. This high-brightness infrared beam is converted into the visible by second harmonic generation. This results in a high non-linear conversion efficiency of 4.5%/W and a maximum power over 2 W at 488 nm, which is limited by thermal effects in the periodically poled lithium niobate (PPLN).
Original languageEnglish
JournalOptics Express
Volume27
Issue number2
Pages (from-to)928-937
ISSN1094-4087
DOIs
Publication statusPublished - 2019

Cite this

Albrodt, P. ; Jamal, Muhammad Tahir ; Hansen, A. K. ; Jensen, Ole Bjarlin ; Blume, G. ; Paschke, K. ; Crump, P. ; Georges, P. ; Lucas-Leclin, G. / Coherent combining of high brightness tapered amplifiers for efficient non-linear conversion. In: Optics Express. 2019 ; Vol. 27, No. 2. pp. 928-937.
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title = "Coherent combining of high brightness tapered amplifiers for efficient non-linear conversion",
abstract = "We report on a coherent beam combination of three high-brightness tapered amplifiers, which are seeded by a single-frequency laser at λ = 976 nm in a simple architecture with efficiently cooled emitters. The maximal combined power of 12.9 W is achieved at a combining efficiency of > 65{\%}, which is limited by the amplifiers’ intrinsic beam quality. The coherent combination cleans up the spatial profile, as the central lobe’s power content increases by up to 86{\%}. This high-brightness infrared beam is converted into the visible by second harmonic generation. This results in a high non-linear conversion efficiency of 4.5{\%}/W and a maximum power over 2 W at 488 nm, which is limited by thermal effects in the periodically poled lithium niobate (PPLN).",
author = "P. Albrodt and Jamal, {Muhammad Tahir} and Hansen, {A. K.} and Jensen, {Ole Bjarlin} and G. Blume and K. Paschke and P. Crump and P. Georges and G. Lucas-Leclin",
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language = "English",
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pages = "928--937",
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Coherent combining of high brightness tapered amplifiers for efficient non-linear conversion. / Albrodt, P.; Jamal, Muhammad Tahir; Hansen, A. K.; Jensen, Ole Bjarlin; Blume, G.; Paschke, K.; Crump, P.; Georges, P.; Lucas-Leclin, G.

In: Optics Express, Vol. 27, No. 2, 2019, p. 928-937.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Coherent combining of high brightness tapered amplifiers for efficient non-linear conversion

AU - Albrodt, P.

AU - Jamal, Muhammad Tahir

AU - Hansen, A. K.

AU - Jensen, Ole Bjarlin

AU - Blume, G.

AU - Paschke, K.

AU - Crump, P.

AU - Georges, P.

AU - Lucas-Leclin, G.

PY - 2019

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AB - We report on a coherent beam combination of three high-brightness tapered amplifiers, which are seeded by a single-frequency laser at λ = 976 nm in a simple architecture with efficiently cooled emitters. The maximal combined power of 12.9 W is achieved at a combining efficiency of > 65%, which is limited by the amplifiers’ intrinsic beam quality. The coherent combination cleans up the spatial profile, as the central lobe’s power content increases by up to 86%. This high-brightness infrared beam is converted into the visible by second harmonic generation. This results in a high non-linear conversion efficiency of 4.5%/W and a maximum power over 2 W at 488 nm, which is limited by thermal effects in the periodically poled lithium niobate (PPLN).

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DO - 10.1364/OE.27.000928

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VL - 27

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JF - Optics Express

SN - 1094-4087

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