Spatial hole burning effects in distributed feedback lasers

Journal Article · Sun Jan 01 04:00:00 EST 1989 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/3.16236· OSTI ID:6404115

Rabinovich, W S; Feldman, B J ^[1]

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1. Laser Physics Branch, Naval Research Lab., Washington, DC (US)

The authors examine the effects of spatial hole burning in a steady-state distributed feedback (DFB) laser by numerically solving the coupled mode equations that describe the system. An approximate solution for the gain above threshold is derived and compared to the exact solution. They also show that the self-induced grating that arises due to spatial hole burning significantly reduces the mode discrimination of index coupled DFB lasers. This makes it difficult for these lasers to maintain single-longitudinal-mode behavior above threshold. However, in addition they find that bulk modulated (gain coupled) DBF lasers do not lose their mode selectivity above threshold, indicating that these lasers may be better choices for narrow-linewidth operation.

• OSTI ID: 6404115
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 25:1; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
656001 -- Condensed Matter Physics-- Solid-State Plasma
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLIFICATION
EQUATIONS
FEEDBACK
GAIN
LASERS
LINE WIDTHS
MODE LOCKING
NUMERICAL SOLUTION
PLASMA
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID-STATE PLASMA