Journal ArticleDOI
Asymmetric-Waveguide Laser Diode for High-Power Optical Pulse Generation by Gain Switching
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In this article, a semiconductor laser with a strongly asymmetric waveguide structure and a relatively thick active layer is proposed and analyzed for the purpose of generating high-power single-optical pulses by gain switching.Abstract:
A semiconductor laser with a strongly asymmetric waveguide structure and a relatively thick (~0.1 mum) active layer, resulting in an extremely large equivalent spot size, is proposed and analyzed for the purpose of generating high-power single-optical pulses by gain switching. An improvement in obtainable single-pulse energies of about an order of magnitude over conventional laser structures is predicted.read more
Citations
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Journal ArticleDOI
Efficient High-Power Laser Diodes
Paul Crump,G. Erbert,H. Wenzel,C. Frevert,C. M. Schultz,K.-H. Hasler,R. Staske,Bernd Sumpf,A. Maassdorf,F. Bugge,S. Knigge,G. Trankle +11 more
TL;DR: In this paper, a review of efforts to increase ηE is presented and it is shown that for well-optimized structures, the residual losses are dominated by the p-side waveguide and nonideal internal quantum efficiency.
Journal ArticleDOI
On Laser Ranging Based on High-Speed/Energy Laser Diode Pulses and Single-Photon Detection Techniques
Juha Kostamovaara,Jaakko Huikari,Lauri Hallman,Ilkka Nissinen,Jan Nissinen,Harri Rapakko,Eugene A. Avrutin,Boris S. Ryvkin +7 more
TL;DR: In this article, the construction principles and performance of a pulsed time-of-flight (TOF) laser radar based on high-speed (FWHM$ 100 ps) and high-energy (sim$ 1 nJ) optical transmitter pulses produced with a specific laser diode working in an enhanced gain-switching regime and based on single-photon detection in the receiver is discussed.
Journal ArticleDOI
Performance improvement by a saturable absorber in gain-switched asymmetric-waveguide laser diodes
TL;DR: A simplest saturable absorber, in the form of an unpumped section, is introduced into a Fabry-Perot semiconductor laser with a strongly asymmetric broadened waveguide structure incorporating a relatively thick active layer for suppression of trailing oscillations and a decrease in the optical pulse width compared to the uniformly biased structure.
Journal ArticleDOI
A 32 × 128 SPAD-257 TDC Receiver IC for Pulsed TOF Solid-State 3-D Imaging
TL;DR: The receiver IC was designed to be used in a solid-state 3-D imaging system with laser illumination concentrated in both time (short sub-ns pulses) and space (targeting only the active rows of the SPAD array).
Journal ArticleDOI
High-Energy Picosecond Pulse Generation by Gain Switching in Asymmetric Waveguide Structure Multiple Quantum Well Lasers
TL;DR: In this paper, a multiple quantum well laser diode utilizing an asymmetric waveguide structure with a large equivalent spot size of ∼3μm was shown to give high energy (∼1 nJ) and short (∻100ps) isolated optical pulses when injected with <10 A and ∼1-ns current pulses realized with a MOS driver.
References
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Journal ArticleDOI
Diode Lasers and Photonic Integrated Circuits
TL;DR: In this paper, a Phenomenological Approach to Diode Lasers is presented, where mirrors and Resonators are used for diode luminaries, and coupled-mode theory is applied.
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Monolithic and multi-gigahertz mode-locked semiconductor lasers: constructions, experiments, models and applications
TL;DR: In this article, the authors present a systematic overview of experimental and theoretical results and approaches reported recently in the field of physics, technology and applications of monolithic mode-locked laser diodes.
Journal ArticleDOI
Gain switching of semiconductor injection lasers
TL;DR: In this article, the limiting factors in short pulse generation by gain switching of semiconductor lasers are analyzed using an approach parallel to conventional Q switching analysis, and the dependence of the gain-switched pulse width and pulse energy on various input parameters such as drive current amplitude, bias current, and spontaneous emission factor can be predicted in a simple manner.
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Design considerations and analytical approximations for high continuous-wave power, broad-waveguide diode lasers
TL;DR: In this paper, the authors derived analytical approximations for the equivalent transverse spot size, d/Γ (<5% error), and the transverse beamwidth of broad-waveguide-type diode lasers, over a wide range in waveguide width: from the first-ordermode cutoff to the third-order-mode cutoff.
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Precise pulsed time-of-flight laser range finder for industrial distance measurements
TL;DR: In this article, a pulsed time-of-flight laser range finder with a 1 GHz avalanche photo diode (APD) receiver and a laser pulser with ∼35 ps pulse width has been developed and tested.