Quantum dot membrane external-cavity surface-emitting laser at 1.5 μm

Phung, H.-M.; Tatar-Mathes, P.; Paranthoën, C.; Levallois, C.; Chevalier, N.; Perrin, M.; Kerchaoui, A.; Kahle, H.; Alouini, M.; Guina, M. (2021-06-07)
 
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Phung, H.-M.
Tatar-Mathes, P.
Paranthoën, C.
Levallois, C.
Chevalier, N.
Perrin, M.
Kerchaoui, A.
Kahle, H.
Alouini, M.
Guina, M.
07.06.2021

Applied Physics Letters
231101
doi:10.1063/5.0053961
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https://urn.fi/URN:NBN:fi:tuni-202107056191

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Peer reviewed
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<p>A membrane external-cavity surface-emitting laser (MECSEL) with an InAs/InP quantum dot (QD) based gain region is demonstrated. The pumping scheme employs a 90° off-axis parabolic mirror to focus the diode laser pump beam to a nearly circular pump spot. With this pump arrangement, the QD MECSEL with SiC heat spreaders produced 320 mW output power at room temperature with direct emission in the near-infrared at 1.5 μm. We report a record value of 86 nm for the tuning range at this wavelength region, owing to a broad QD gain bandwidth and wide tunability in MECSELs.</p>
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