Results 51 to 60 of about 219,128 (154)

A new tapered semiconductor laser with integrated multimode interference coupler

open access: yesFrontiers in Physics
A new tapered semiconductor laser with an integrated multimode interference coupler is presented in this paper. The seed source of the new laser is a multimode interference coupler semiconductor laser, which overcomes the limitations imposed by the ...
Jianxin Zhang   +11 more
doaj   +1 more source

Frequency stabilization of an ultraviolet semiconductor disk laser [PDF]

open access: yes, 2013
We report a tunable, narrow-linewidth UV laser based on intracavity second-harmonic generation in a red semiconductor disk laser. Single-frequency operation is demonstrated with a total UV output power of 26 mW. By servo-locking the fundamental frequency
Hastie, Jennifer   +2 more
core   +1 more source

Featureless Broadband Chaos Through Cascaded Optically Injected Semiconductor Lasers

open access: yesPhotonics
Optical chaos generated by a semiconductor laser under cascaded optical injection is experimentally and numerically investigated. A semiconductor slave laser under continuous-wave optical injection from a master laser is employed as the chaotic laser ...
Mohammad AlMulla
doaj   +1 more source

Effective Failure Analysis for Packaged Semiconductor Lasers with a Simple Sample Preparation and Home-Made PEM System

open access: yesPhotonics, 2021
As the application requirements of semiconductor lasers continue to increase, severe challenges are brought to the reliability of semiconductor lasers.
Tianyu Sun, Lei Qiao, Mingjun Xia
doaj   +1 more source

Combined High Power and High Frequency Operation of InGaAsP/InP Lasers at 1.3μm [PDF]

open access: yes, 1990
A simultaneous operation of a semiconductor laser at high power and high speed was demonstrated in a buried crescent laser on a P-InP substrate. In a cavity length of 300μm, a maximum CW power of 130mW at room temperature was obtained in a junction-up ...
Bar-Chaim, N.   +4 more
core   +1 more source

Adopting Small Signal Model for the Equivalent Circuit Instrumentation of a Multi-QuantumWells Semiconductor Laser [PDF]

open access: yesEngineering and Technology Journal, 2007
In this study, results of an analysis for the MQW semiconductor laser performance are presented. This analysis considers the steady-state condition and small signal modeling to introduce optical gain, charge carrier density, current and output laser ...
doaj   +1 more source

Spin-to-Orbital Angular Momentum Conversion in Semiconductor Microcavities [PDF]

open access: yes, 2011
We experimentally demonstrate a technique for the generation of optical beams carrying orbital angular momentum using a planar semiconductor microcavity.
A. V. Kavokin   +12 more
core   +2 more sources

In-situ tuning of individual position-controlled nanowire quantum dots via laser-induced intermixing

open access: yes, 2018
We demonstrate an in-situ technique to tune the emission energy of semiconductor quantum dots. The technique is based on laser-induced atomic intermixing applied to nanowire quantum dots grown using a site-selective process that allows for the ...
Aers, Geof C.   +6 more
core   +1 more source

Optimisation of distributed feedback laser biosensors [PDF]

open access: yes, 2007
A new integrated optical sensor chip is proposed, based on a modified distributed- feedback (DFB) semiconductor laser. The semiconductor layers of different refractive indices that comprise a laser form the basis of a waveguide sensor, where changes in ...
Coote, J, Reddy, Subrayal M, Sweeney, SJ
core   +1 more source

A novel power stability drive system of semiconductor Laser Diode for high-precision measurement

open access: yesMeasurement + Control, 2019
In view of the strict requirements of the current high-precision measurement system for stable output power of the semiconductor LD (Laser Diode), a semiconductor LD stable power drive and multi-closed-loop control system are proposed after analyzing the
He Huang   +6 more
doaj   +1 more source

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