2.7 W diffraction-limited yellow lasers by efficient frequency doubling of high-brightness tapered diode lasers

2.7 W diffraction-limited yellow lasers by efficient frequency doubling of high-brightness tapered diode lasers

Modulated yellow lasers may enable more efficient photocoagulation for treatments of ophthalmic diseases. In this regard, we present a laser system emitting 2.7 W of true-yellow light at 576 nm by frequency doubling the emission of a tapered diode laser emitting 7 W at 1153 nm. The frequency doublin...

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Bibliographic Details
Published in:Optics communications Vol. 435; pp. 145 - 149
Main Authors: Vilera, Mariafernanda, Christensen, Mathias, Hansen, Anders K., Arulthasan, Paranitharan, Noordegraaf, Danny, Buß, Thomas, Jensen, Ole B., Andersen, Peter E., Skovgaard, Peter M.W.
Format: Journal Article
Language:English
Published: Elsevier B.V 15-03-2019
Subjects:
576 nm
Second harmonic generation
Tapered diode laser
Visible lasers
Yellow lasers
Second harmonic generation
Tapered diode laser
576 nm
Visible lasers
Yellow lasers
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Summary:Modulated yellow lasers may enable more efficient photocoagulation for treatments of ophthalmic diseases. In this regard, we present a laser system emitting 2.7 W of true-yellow light at 576 nm by frequency doubling the emission of a tapered diode laser emitting 7 W at 1153 nm. The frequency doubling is based on a single-pass configuration using a cascade of two 40-mm periodically poled lithium niobate (PPLN) crystals. The stabilization of the yellow power over 10 h showed a standard deviation of 0.10% and a relative intensity noise of 0.032% rms. Moreover, we demonstrate the generation of yellow pulses with 900 mW of amplitude and a high extinction ratio in the microsecond and millisecond regimes, as required for photocoagulation.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2018.11.052