Intracavity frequency-doubled degenerate laser

We develop a green light source with low spatial coherence via intracavity frequency doubling of a solid-state degenerate laser. The second harmonic emission supports many more transverse modes than the fundamental emission, and exhibit lower spatial coherence. A strong suppression of speckle format...

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Bibliographic Details
Published inarXiv.org
Main Authors Liew, Seng Fatt, Knitter, Sebastian, Weiler, Sascha, Monjardin-Lopez, Jesus Fernando, Ramme, Mark, Redding, Brandon, Choma, Michael A, Cao, Hui
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 18.09.2016
Subjects
Beams (radiation)
Coherence
Display devices
Emission
Fluorescence
Lasers
Light sources
Physics - Optics
Second harmonic generation
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Summary:We develop a green light source with low spatial coherence via intracavity frequency doubling of a solid-state degenerate laser. The second harmonic emission supports many more transverse modes than the fundamental emission, and exhibit lower spatial coherence. A strong suppression of speckle formation is demonstrated for both fundamental and second harmonic beams. Using the green emission for fluorescence excitation, we show the coherent artifacts are removed from the full-field fluorescence images. The high power, low spatial coherence and good directionality makes the green degenerate laser an attractive illumination source for parallel imaging and projection display.
ISSN:2331-8422
DOI:10.48550/arxiv.1609.05534