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Influence of integrated optical Feedback on tunable Lasers
摘要： In this paper we explain how to use rate equations to describe a laser that includes integrated optical feedback. We find a relation between the threshold current, the voltage drop at the gain section, output power, linewidth, and side mode suppression ratio, and show experimental results.
关键词： Frequency Stabilization,Continuous Tuning,Gain Voltage,Wavelength Stabilization,Optical Feedback Interferometry,Tunable Laser,Output Power,Rate Equations,Laser Stability,Linewidth,Optical Feedback,Side Mode Suppression Ratio,Wavelength locking
更新于2025-09-12 10:27:22
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Characterization of Acoustic Sources by Optical Feedback Interferometry
摘要： Sound can be described as the propagation of pressure variations in compressible media that involves compression and expansion and induces a change in the density of the medium. This change in acoustic pressure as it induces a change of the refractive index can be measured by optical methods, the most recent being the optical feedback interferometry. With this technique, a laser diode is beaming on a reflective surface thus creating a cavity where the acoustic wave propagates. This paper presents a novel experimental technique to measure radiation pattern of acoustic sources based on optical feedback interferometry in a laser diode.
关键词： acoustic,radiation pattern,optical feedback interferometry,ultrasound
更新于2025-09-09 09:28:46