Self-pulsing 1050 nm quantum dot edge emitting laser diodes

Liu, Haoling, Smowton, Peter ORCID: https://orcid.org/0000-0002-9105-4842, Summers, Huw, Edwards, Gareth and Drexler, Wolfgang 2009. Self-pulsing 1050 nm quantum dot edge emitting laser diodes. Applied Physics Letters 95 (10) , 101111. 10.1063/1.3227654

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Abstract

We examine self-pulsing, edge emitting, quantum dot laser diodes as continuous broad spectrum light sources emitting at ∼ 1050 nm. Devices are configured with split contacts. When operated without a saturable absorber, the laser emits a number of discrete narrow modes, which merge to form a broad continuous lasing spectrum on application of the saturable absorber. The broadened spectra are consistent with the modulated carrier density expected under Q-switched operation. This provides a simple technique for generating emission suitable for biomedical applications. The spectral width achieved is ∼ 10 nm, and the average output power is 7.5 mW.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Optometry and Vision Sciences Physics and Astronomy
Subjects:	Q Science > QC Physics R Medicine > RE Ophthalmology
Uncontrolled Keywords:	carrier density, light sources, optical saturable absorption, Q-switching, semiconductor lasers, semiconductor quantum dots
Additional Information:	3 pp.
Publisher:	American Institute of Physics
ISSN:	0003-6951
Last Modified:	19 May 2023 17:43
URI:	https://orca.cardiff.ac.uk/id/eprint/7352

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