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Spatial holeburning effects in the amplified spontaneous emission spectra of the non-lasing supermode in semiconductor laser arrays | | Holger F. Hofmann
; Ortwin Hess
; | | Date: |
1 Apr 1998 | | Journal: | J. Opt. Soc. Am. B 16, 137 (1999) | | Subject: | Optics; Adaptation and Self-Organizing Systems | physics.optics adap-org nlin.AO quant-ph | | Abstract: | The amplified spontaneous emission spectrum of the light field in the non-lasing supermode of two coupled semiconductor lasers is analyzed using linearized Langevin equations. It is shown that the interference betweeen the laser mode and the fluctuating light field in the non-lasing mode causes spatial holeburning. This effect introduces a phase sensitive coupling between the laser field and the fluctuations in the non-lasing mode. For high laser fields, this coupling splits the spectrum of the non-lasing mode into a triplet consisting of two relaxation oscillation sidebands which are in phase with the laser light and a center line at the lasing frequency with a phase shift of pi half relative to the laser light. As the laser intensity is increased close to threshold, the spectrum shows a continuous transition from the single amplified spontaneous emission line at the frequency of the laser mode to the triplet structure. An analytical expression for this transition is derived and typical features are discussed. | | Source: | arXiv, physics/9804002 | | Services: | Forum | Review | PDF | Favorites | |
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