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Proceedings Paper

Yellow laser light generation by frequency doubling of the output from a master oscillator fiber power amplifier system
Author(s): Manuel Ryser; Carlos Marques; Rogério Nogueira; Valerio Romano
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Paper Abstract

We present a power-scalable approach for yellow laser-light generation based on standard Ytterbium (Yb) doped fibers. To force the cavity to lase at 1154 nm, far above the gain-maximum, measures must be taken to fulfill lasing condition and to suppress competing amplified spontaneous emission (ASE) in the high-gain region. To prove the principle we built a fiber-laser cavity and a fiber-amplifier both at 1154 nm. In between cavity and amplifier we suppressed the ASE by 70 dB using a fiber Bragg grating (FBG) based filter. Finally we demonstrated efficient single pass frequency doubling to 577 nm with a periodically poled lithium niobate crystal (PPLN). With our linearly polarized 1154 nm master oscillator power fiber amplifier (MOFA) system we achieved slope efficiencies of more than 15 % inside the cavity and 24 % with the fiber-amplifier. The frequency doubling followed the predicted optimal efficiency achievable with a PPLN crystal. So far we generated 1.5 W at 1154nm and 90 mW at 577 nm. Our MOFA approach for generation of 1154 nm laser radiation is power-scalable by using multi-stage amplifiers and large mode-area fibers and is therefore very promising for building a high power yellow laser-light source of several tens of Watt.

Paper Details

Date Published: 4 March 2015
PDF: 7 pages
Proc. SPIE 9344, Fiber Lasers XII: Technology, Systems, and Applications, 934410 (4 March 2015); doi: 10.1117/12.2080203
Show Author Affiliations
Manuel Ryser, Univ. Bern (Switzerland)
Carlos Marques, Instituto de Telecomunicações (Portugal)
Rogério Nogueira, Instituto de Telecomunicações (Portugal)
Valerio Romano, Univ. of Bern (Switzerland)

Published in SPIE Proceedings Vol. 9344:
Fiber Lasers XII: Technology, Systems, and Applications
L. Brandon Shaw, Editor(s)

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