Theory of Optical Feedback in Semiconductor Lasers

Ohtsubo, Junji

doi:10.1007/978-3-642-30147-6_4

Cited by 4 publications

(1 citation statement)

References 67 publications

(58 reference statements)

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“…Multiple quantum wells are stacked together in a cascaded structure, forming a potential energy ladder. Excitation of electrons from the ground state to higher energy states occurs within the active layer, and as electrons transit between quantum wells, they emit photons due to resonant tunneling [15,16] Nano QCLs have revolutionized several fields, such as gas sensing, medical diagnostics, laser-based manufacturing, and communication. As the understanding of nanoscale physics and quantum mechanics continues to develop, further advancements in Nano QCLs are anticipated.…”

Section: Introductionmentioning

confidence: 99%

Studying the Synchronization for Multiple Transmitter- Receiver Nano Quantum Cascade Lasers.

Resan,

Waried

2024

UTJsci

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In this paper, the chaos synchronization of four Nano quantum cascade lasers with optoelectronic feedback was investigated. The present system consists of two receiver lasers and two transmitters lasers. The rate equation model was modulated to study the effect of the Purcell factor F and the spontaneous emission factor because of their importance in a nanocavity. The results indicated that the suggested system, realize the chaos synchronization. Also, the nanocavity parameters F and β, have significant effect on the chaos synchronization quality and may lead to lose it. Furthermore, the results showed the weak effect of delay time on the performance of lasers.

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Section: Introductionmentioning

confidence: 99%

Studying the Synchronization for Multiple Transmitter- Receiver Nano Quantum Cascade Lasers.

Resan,

Waried

2024

UTJsci

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Tunable Dual-Wavelength Self-injection Locked InGaN/GaN Green Laser Diode

Shamim

Alkhazragi

et al. 2019

IEEE Access

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We implemented a tunable dual-longitudinal-mode spacing InGaN/GaN green (521-528 nm) laser diode by employing a self-injection locking scheme that is based on an external cavity configuration and utilizing either a high or partial-reflecting mirror. A tunable longitudinal-mode spacing of 0.20 -5.96 nm was accomplished, corresponding to a calculated frequency difference of 0.22-6.51 THz, as a result. The influence of operating current and temperature on the system performance was also investigated with a measured maximum side-mode-suppression ratio of 30.4 dB and minimum dual-mode peak optical power ratio of 0.03 dB. To shed light on the operation of the dual-wavelength device arising from the tunable longitudinal-mode spacing mechanism, the underlying physics is qualitatively described. To the best of our knowledge, this tunable longitudinal-mode-spacing dual-wavelength device is novel, and has potential applications as an alternative means in millimeter wave and THz generation, thus possibly addressing the terahertz technology gap. The dual-wavelength operation is also attractive for high-resolution imaging and broadband wireless communication.

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Solving self-mixing equations for arbitrary feedback levels: a concise algorithm

Kliese¹,

Taimre²,

Bakar³

et al. 2014

Appl. Opt.

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Self-mixing laser sensors show promise for a wide range of sensing applications, including displacement, velocimetry, and fluid flow measurements. Several techniques have been developed to simulate self-mixing signals; however, a complete and succinct process for synthesizing self-mixing signals has so far been absent in the open literature. This article provides a systematic numerical approach for the analysis of self-mixing sensors using the steady-state solution to the Lang and Kobayashi model. Examples are given to show how this method can be used to synthesize self-mixing signals for arbitrary feedback levels and for displacement, distance, and velocity measurement. We examine these applications with a deterministic stimulus and discuss the velocity measurement of a rough surface, which necessitates the inclusion of a random stimulus.

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Theory of Optical Feedback in Semiconductor Lasers

Cited by 4 publications

References 67 publications

Studying the Synchronization for Multiple Transmitter- Receiver Nano Quantum Cascade Lasers.

Studying the Synchronization for Multiple Transmitter- Receiver Nano Quantum Cascade Lasers.

Tunable Dual-Wavelength Self-injection Locked InGaN/GaN Green Laser Diode

Solving self-mixing equations for arbitrary feedback levels: a concise algorithm

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