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Power scaling and thermal lensing in 825 nm emitting membrane external-cavity surface-emitting lasers

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Power scaling and thermal lensing in 825 nm emitting membrane external-cavity surface-emitting lasers. / Phung, Hoy-My; Kahle, Hermann; Penttinen, Jussi-Pekka; Rajala, Patrik; Ranta, Sanna; Guina, Mircea.

In: Optics Letters, Vol. 45, No. 2, 15.01.2020, p. 547-550.

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@article{5939cc837e6142d7ad42745ca8e5f5e1,
title = "Power scaling and thermal lensing in 825 nm emitting membrane external-cavity surface-emitting lasers",
abstract = "We present a membrane external-cavity surface-emitting laser (MECSEL) operating around 825 nm at room temperature. With a tuning range of 22 nm, the MECSEL fills the spectral gap between 810 nm and 830 nm, and extends the wavelength coverage of this category of high beam quality semiconductor lasers. For high power operation, the pump spot size and cavity mode size can be enlarged in MECSELs. We apply this technique and demonstrate power scaling. The maximum output power is increased from 0.7 W to 1.4 W. Investigations on the beam quality reveal thermal lensing with a marginally changing M² value close to the diffraction limit.",
author = "Hoy-My Phung and Hermann Kahle and Jussi-Pekka Penttinen and Patrik Rajala and Sanna Ranta and Mircea Guina",
note = "INT=phys,{"}Rajala, Patrik{"}",
year = "2020",
month = "1",
day = "15",
doi = "10.1364/OL.382377",
language = "English",
volume = "45",
pages = "547--550",
journal = "Optics Letters",
issn = "0146-9592",
publisher = "OPTICAL SOC AMER",
number = "2",

}

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TY - JOUR

T1 - Power scaling and thermal lensing in 825 nm emitting membrane external-cavity surface-emitting lasers

AU - Phung, Hoy-My

AU - Kahle, Hermann

AU - Penttinen, Jussi-Pekka

AU - Rajala, Patrik

AU - Ranta, Sanna

AU - Guina, Mircea

N1 - INT=phys,"Rajala, Patrik"

PY - 2020/1/15

Y1 - 2020/1/15

N2 - We present a membrane external-cavity surface-emitting laser (MECSEL) operating around 825 nm at room temperature. With a tuning range of 22 nm, the MECSEL fills the spectral gap between 810 nm and 830 nm, and extends the wavelength coverage of this category of high beam quality semiconductor lasers. For high power operation, the pump spot size and cavity mode size can be enlarged in MECSELs. We apply this technique and demonstrate power scaling. The maximum output power is increased from 0.7 W to 1.4 W. Investigations on the beam quality reveal thermal lensing with a marginally changing M² value close to the diffraction limit.

AB - We present a membrane external-cavity surface-emitting laser (MECSEL) operating around 825 nm at room temperature. With a tuning range of 22 nm, the MECSEL fills the spectral gap between 810 nm and 830 nm, and extends the wavelength coverage of this category of high beam quality semiconductor lasers. For high power operation, the pump spot size and cavity mode size can be enlarged in MECSELs. We apply this technique and demonstrate power scaling. The maximum output power is increased from 0.7 W to 1.4 W. Investigations on the beam quality reveal thermal lensing with a marginally changing M² value close to the diffraction limit.

U2 - 10.1364/OL.382377

DO - 10.1364/OL.382377

M3 - Article

VL - 45

SP - 547

EP - 550

JO - Optics Letters

JF - Optics Letters

SN - 0146-9592

IS - 2

ER -