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Liew SF, Knitter S, Weiler S, et al. Intracavity frequency-doubled degenerate laser. Opt Lett. 2017;42(3):411-414doi: 10.1364/OL.42.000411.
Liew, S. F., Knitter, S., Weiler, S., Monjardin-Lopez, J. F., Ramme, M., Redding, B., Choma, M. A., & Cao, H. (2017). Intracavity frequency-doubled degenerate laser. Optics letters, 42(3), 411-414. https://doi.org/10.1364/OL.42.000411
Liew, Seng Fatt, et al. "Intracavity frequency-doubled degenerate laser." Optics letters vol. 42,3 (2017): 411-414. doi: https://doi.org/10.1364/OL.42.000411
Liew SF, Knitter S, Weiler S, Monjardin-Lopez JF, Ramme M, Redding B, Choma MA, Cao H. Intracavity frequency-doubled degenerate laser. Opt Lett. 2017 Feb 01;42(3):411-414. doi: 10.1364/OL.42.000411. PMID: 28146489.
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Opt Lett. 2017 Feb 01;42(3):411-414. doi: 10.1364/OL.42.000411.

Intracavity frequency-doubled degenerate laser.

Optics letters

Seng Fatt Liew, Sebastian Knitter, Sascha Weiler, Jesus Fernando Monjardin-Lopez, Mark Ramme, Brandon Redding, Michael A Choma, Hui Cao

PMID: 28146489 DOI: 10.1364/OL.42.000411

Abstract

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 exhibits 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 make the green degenerate laser an attractive illumination source for parallel imaging and projection display.

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