Yellow laser light generation by frequency doubling of the output from a master oscillator fiber power amplifier system

Shaw, L. Brandon; Ryser, Manuel; Marques, Carlos; Nogueira, Rogério; Romano, Valerio (4 March 2015). Yellow laser light generation by frequency doubling of the output from a master oscillator fiber power amplifier system. Proceedings of SPIE - International Society for Optical Engineering, 9344, p. 934410. SPIE 10.1117/12.2080203

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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.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics
08 Faculty of Science > Institute of Applied Physics > Lasers

UniBE Contributor:

Ryser, Manuel and Romano, Valerio

Subjects:

500 Science > 530 Physics
600 Technology > 620 Engineering

ISSN:

0277-786X

Series:

Proceedings of SPIE

Publisher:

SPIE

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

04 Feb 2016 13:30

Last Modified:

04 Feb 2016 13:30

Publisher DOI:

10.1117/12.2080203

URI:

https://boris.unibe.ch/id/eprint/74977

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