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Open Access item Linewidth of monolithic semiconductor ring lasers

Authors:Giuliani, Guido
Scirè, Alessandro
Sorel, Marc
Donati, Silvano
Keywords:Semiconductor ring laser, Laser linewidt, Laser dynamics, Spontaneous emission, Laser model
Issue Date:2006
Publisher:Society of Photo-Optical Instrumentation Engineers
Citation:Proceedings of SPIE 6184: 640-647 (2006)
Abstract:In this work we numerically calculate the linewidth of a single–mode monolithic Semiconductor Ring Laser (SRL) operating in the unidirectional regime. A new expression for the SRL linewidth is derived from the conventional Henry’s formula, and the importance of different physical parameters is discussed. In particular, the linewidth is mainly determined by the SRL diameter, because the waveguide bending loss have a very strong dependence on the diameter. We show that circular SRLs with diameter smaller than 180 µm are unlikely to be operated CW. As a general rule, the linewidth decreases for increasing SRL diameter, and it varies from 15 MHz for 200 µm diameter down to 1 MHz for 2000 µm diameter.
Description:En: Semiconductor Lasers and Laser Dynamics II; Daan Lenstra, Markus Pessa, Ian H. White
URI:http://hdl.handle.net/10261/47491
ISSN:0277-786X
Appears in Collections:(IFISC) Artículos

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