Applied Physics Letters

2000

DOI: 10.1063/1.126649

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Power dependence of the injection lock band of angled-grating distributed feedback lasers

David J. Gallant

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Abstract: High power buried sampled grating distributed feedback quantum cascade lasers 0.45 W diffraction-limited beam and single-frequency operation from antiguided phase-locked laser array with distributed feedback grating

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References 14 publications

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Injection locking of individual broad-area lasers in an integrated high-power diode array

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2002

Applied Physics Letters

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We report experimental results on the injection locking of individual multimode broad-area high-power laser (one-in-a-time) in a linear array bar consisting of 19 lasers driven by a common current source. Each broad-area laser, capable of generating a beam with a power of 1 W, is injection locked to a single-longitudinal and transverse mode with less than 0.5 mW of injection power. The injection-locked broad-area laser shows very narrow linewidth close to the injection laser regardless of the output power. Our research suggests that the matching of the injection wavelength to one of the free-running modes of lasers in the array is the essential condition for achieving coherent operation of the array via injection locking.

Injection locking of individual broad-area lasers in an integrated high-power diode array

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,

²

,

³

2002

Applied Physics Letters

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We report experimental results on the injection locking of individual multimode broad-area high-power laser (one-in-a-time) in a linear array bar consisting of 19 lasers driven by a common current source. Each broad-area laser, capable of generating a beam with a power of 1 W, is injection locked to a single-longitudinal and transverse mode with less than 0.5 mW of injection power. The injection-locked broad-area laser shows very narrow linewidth close to the injection laser regardless of the output power. Our research suggests that the matching of the injection wavelength to one of the free-running modes of lasers in the array is the essential condition for achieving coherent operation of the array via injection locking.

Synchronization of High-Power Broad-Area Semiconductor Lasers

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2004

IEEE J. Select. Topics Quantum Electron.

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Simultaneous injection locking of couples of high-power broad-area lasers driven by a common current source

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2002

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We experimentally demonstrate the simultaneous injection locking of pairs of high-power broad-area laser diodes in a 19-laser array driven by a common current source. Each pair is injection locked by use of a single-mode low-power semiconductor laser. The frequency and phase locking are verified bythe optical spectrum and the interference pattern between the injection-locked lasers. The influence of frequency detuning on the (simultaneous) injection behavior has been experimentally clarified. We validate a necessary condition for the injection locking of a broad-area laser array.

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