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Encyclopedia of Laser Physics and Technology

Green Lasers

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Ask RP Photonics concerning different kinds of green lasers. Particularly for frequency-doubled solid-state lasers, including fiber sources, RP Photonics has a very detailed expertise.

Definition: lasers emitting in the green spectral region

This article concerns lasers emitting in the green spectral region, i.e., with a wavelength roughly around 510-570 nm. The choice of laser gain media for such wavelengths is limited, and the performance achievable is typically not as good as e.g. in the infrared spectral region. Nevertheless, green-emitting lasers of various kinds are probably the most often used visible lasers.

VERDI green laser

Figure 1: Photograph of the VERDI green laser from Coherent. This device contains a diode-pumped vanadate laser with intracavity frequency doubling. The image was kindly provided by Coherent.

The following types of green lasers are most common:

Green lasers are used e.g. as laser pointers, for laser projection displays (as part of RGB sources), for printing, in interferometers, and for pumping of solid-state lasers (e.g. titanium-sapphire lasers). In material processing, green lasers (as compared with near-infrared lasers) can bring benefits via a much higher absorption coefficient e.g. in copper, gold, or silicon.

Bibliography

[1]A. J. Silversmith et al., "Green infrared-pumped erbium upconversion laser", Appl. Phys. Lett. 51, 1977 (1987)
[2]F. Tong et al., "551 nm diode-laser-pumped upconversion laser", Electron. Lett. 25, 1389 (1989)
[3]T. Hebert et al., "Blue and green CW upconversion lasing in Er:YLiF4", Appl. Phys. Lett. 57, 1727 (1990)
[4]T. J. Whitley et al., "Upconversion pumped green lasing in erbium doped fluorozirconate fibre", Electron. Lett. 27 (20), 1785 (1991)
[5]E. Kato et al., "Significant progress in II-VI blue-green laser diode lifetime", Electron. Lett. 34, 282 (1998)
[6]L. McDonagh and R. Wallenstein, "Low-noise 62 W CW intracavity-doubled TEM00 Nd:YVO4 green laser pumped at 888 nm", Opt. Lett. 32 (7), 802 (2007)
[7]C. Stolzenburg et al., "Cavity-dumped intracavity-frequency-doubled Yb:YAG thin-disk laser with 100 W average power", Opt. Lett. 32 (9), 1123 (2007)
[8]J.-Y. Kim et al., "Highly efficient green VECSEL with intra-cavity diamond heat spreader", Electron. Lett. 43 (2), 105 (2007)

See also: lasers, laser diodes, frequency doubling, intracavity frequency doubling, blue lasers, red lasers, visible lasers, titanium-sapphire lasers

Category: lasers

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