Nonlinear dynamics and spectral behavior for an external cavity laser

Olesen, H.; Osmundsen, J.; Tromborg, B.

doi:10.1109/jqe.1986.1073061

Cited by 138 publications

(39 citation statements)

References 29 publications

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“…At higher feedback levels one observes a saturation of linewidth reduction followed by an abrupt transition to a state characterized by a very broad laser line [4], [8], [9]. By computer simulations this behavior was also found to be contained in the model of Lang and Kobayashi and to be a consequence of the nonlinear dynamics 191.…”

mentioning

confidence: 68%

“…They introduced the concept of "coherence collapse" to describe the dramatic transition from a state of long coherence length to the line broadened state of short coherence length. As pointed out in [8] and [9], the increased linewidth may be a result of chaotic dynamics, which has also been suggested for the external cavity configuration in [21]- [24]. A survey of chaos in semiconductor laser devices and additional references are given in [25].…”

mentioning

confidence: 76%

“…We shall assume that the feedback ratio and external cavity length are large enough (a,,/( 2~7~~) >> 1, see [ 171 ) that the dominant mode may be taken to satisfy w, 7 = 0 (mod 2 a ) , which according to (7b)-(7c) corresponds to maximum output power. Defining a detuning parameter by, [9], d = w,r -aK7/rin (mod 27r), w,r = 0 (mod 27r) corresponds to d = 0, which is ensured experimentally by varying the cavity length within a wavelength or by varying w, via bias current or temperature. According to (7b) the threshold current is then reduced from the solitary value Jth = N t h / r , to the effective value Jlh = Jth -2~/ ( GNrin7,).…”

Section: Stationary Solutions and Bistabilitymentioning

confidence: 99%

“…If the mean number of spontaneous emission events occurring in a time interval of length T~~ is large, R * rin >> 13. This leads to additional overlap of the high and low 1, the real and imaginary parts of A FE may be generated from independent normal distributions with zero mean and standard deviations [9] IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 24, NO.…”

Section: Noise Simulations a The Multimode Traveling Wave Modelmentioning

confidence: 99%

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Bistability and low-frequency fluctuations in semiconductor lasers with optical feedback: a theoretical analysis

Mørk

Tromborg²,

Christiansen

1988

IEEE J. Quantum Electron.

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178

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mentioning

confidence: 68%

mentioning

confidence: 76%

Section: Stationary Solutions and Bistabilitymentioning

confidence: 99%

Section: Noise Simulations a The Multimode Traveling Wave Modelmentioning

confidence: 99%

See 2 more Smart Citations

Bistability and low-frequency fluctuations in semiconductor lasers with optical feedback: a theoretical analysis

Mørk

Tromborg²,

Christiansen

1988

IEEE J. Quantum Electron.

Self Cite

178

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“…The modes and antimodes of the external cavity laser correspond to the solutions of the transcendental (9), where the antimodes correspond to the condition [10] (10)…”

Section: Theoretical Analysis: Low-frequency Modulationmentioning

confidence: 99%

Entraining power-dropout events in an external-cavity semiconductor laser using weak modulation of the injection current

Sukow

Gauthier

2000

IEEE J. Quantum Electron.

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Abstract-We measure experimentally the effects of injection current modulation on the statistical distribution of time intervals between power-dropout events occuring in an external-cavity semiconductor laser operating in the low-frequency fluctuation regime. These statistical distributions are sensitive indicators of the presence of pump current modulation. Under most circumstances, we find that weak low-frequency (in the vicinity of 19 MHz) modulation of the current causes the dropouts to occur preferentially at intervals that are integral multiples of the modulation period. The dropout events can be entrained by the periodic perturbations when the modulation amplitude is large (peak-to-peak amplitude 8% of the dc injection current). We conjecture that modulation induces a dropout when the modulation frequency is equal to the difference in frequency between a mode of the extended cavity laser and its adjacent antimode. We also find that the statistical distribution of the dropout events is unaffected by the periodic perturbations when the modulation frequency is equal to the free spectral range of the external cavity. Numerical simulations of the extended-cavity laser display qualitatively similar behavior. The relationship of these phenomena to stochastic resonance is discussed and a possible use of the modulated laser dynamics for chaos communication is described.

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Generation of microwave signals from a laser diode coupled to an external cavity

Arora

1989

Micro & Optical Tech Letters

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This article describes a technique by which a laser diode coupled with an external cavity is used in an interferometric system resulting in a direct envelope modulation of the optical carrier. The laser output is fed to a Mach‐Zehnder interferometer in which the time delay associated with the path imbalance is adjusted to half the time period Tm of the modulating sawtooth current. The two signals are heterodyned to simulate an envelope modulated optical signal.

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Nonlinear dynamics and spectral behavior for an external cavity laser

Cited by 138 publications

References 29 publications

Bistability and low-frequency fluctuations in semiconductor lasers with optical feedback: a theoretical analysis

Bistability and low-frequency fluctuations in semiconductor lasers with optical feedback: a theoretical analysis

Entraining power-dropout events in an external-cavity semiconductor laser using weak modulation of the injection current

Generation of microwave signals from a laser diode coupled to an external cavity

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