dorsal/arxiv
View SchemaIs there a linewidth theory for semiconductor lasers?
| Authors | B. Spivak, S. Luryi |
|---|---|
| Categories | |
| ArXiv ID | physics/0608260 |
| URL | https://arxiv.org/abs/physics/0608260 |
Abstract
Semiconductor laser generation begins at a critical injection when the gain and loss spectra touch each other at a singular frequency. In the framework of the standard (Schawlow-Townes-Lax-Henry) theory, the finite linewidth results from the account of fluctuations associated with the random spontaneous emission processes. This approach is based on the assumption that in the mean-field approximation the singular frequency generation persists for injection levels higher than critical. We show that this assumption in the framework of the Boltzmann kinetic equation for electrons and photons is invalid and therefore the standard description of semiconductor laser linewidth lacks theoretical foundation. Experimental support of the standard theory is also questionable.
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"date_created": "2026-03-02T18:01:10.814000Z",
"date_modified": "2026-03-02T18:01:10.814000Z",
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"abstract": "Semiconductor laser generation begins at a critical injection when the gain\nand loss spectra touch each other at a singular frequency. In the framework of\nthe standard (Schawlow-Townes-Lax-Henry) theory, the finite linewidth results\nfrom the account of fluctuations associated with the random spontaneous\nemission processes. This approach is based on the assumption that in the\nmean-field approximation the singular frequency generation persists for\ninjection levels higher than critical. We show that this assumption in the\nframework of the Boltzmann kinetic equation for electrons and photons is\ninvalid and therefore the standard description of semiconductor laser linewidth\nlacks theoretical foundation. Experimental support of the standard theory is\nalso questionable.",
"arxiv_id": "physics/0608260",
"authors": [
"B. Spivak",
"S. Luryi"
],
"categories": [
"physics.optics"
],
"title": "Is there a linewidth theory for semiconductor lasers?",
"url": "https://arxiv.org/abs/physics/0608260"
},
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