Results 11 to 20 of about 2,977 (160)

Antireflective vertical-cavity surface-emitting laser for LiDAR [PDF]

open access: yesNature Communications
Multijunction vertical-cavity surface-emitting lasers (VCSELs) have gained popularity in automotive LiDARs, yet achieving a divergence of less than 16° (D86) is difficult for conventional extended cavity designs due to multiple-longitudinal-mode lasing ...
Cheng Zhang, Huijie Li, Dong Liang
doaj   +4 more sources

Spontaneously implemented spatial coherence in vertical-cavity surface-emitting laser dot array [PDF]

open access: yesScientific Reports, 2022
We report a self-induced spatially-coherent dot array consisting of fourteen units of vertical-cavity surface-emitting modes that exhibit spatially uniform spectra.
Tatsushi Hamaguchi   +16 more
doaj   +2 more sources

Electrically pumped surface-emitting amplified spontaneous emission from colloidal quantum dots [PDF]

open access: yesLight: Science & Applications
Colloidal quantum dots (QDs) are promising gain materials for realizing solution-processable, wavelength-tunable and low-cost laser diodes. However, achieving electrically pumped amplified spontaneous emission (ASE) in QDs, a prerequisite for lasing, is ...
Fengshou Tian   +4 more
doaj   +2 more sources

Simulation of Modal Control of Metal Mode-Filtered Vertical-Cavity Surface-Emitting Laser [PDF]

open access: yesSensors
In this study, a novel metal-dielectric film mode filter structure that can flexibly regulate the transverse mode inside vertical-cavity surface-emitting lasers (VCSELs) is proposed.
Jingfei Mu   +11 more
doaj   +2 more sources

Low-threshold surface-emitting colloidal quantum-dot circular Bragg laser array [PDF]

open access: yesLight: Science & Applications
Colloidal quantum dots (CQDs) are attractive gain media due to their wavelength-tunability and low optical gain threshold. Consequently, CQD lasers, especially the surface-emitting ones, are promising candidates for display, sensing and communication ...
Yangzhi Tan   +6 more
doaj   +2 more sources

Vertical Cavity Surface Emitting Terahertz Laser [PDF]

open access: yesPhysical Review Letters, 2012
Vertical cavity surface emitting terahertz lasers can be realized in conventional semiconductor microcavities with embedded quantum wells in the strong coupling regime. The cavity is to be pumped optically at half the frequency of the 2p exciton state.
Kavokin, A.V.   +3 more
openaire   +5 more sources

Cavity solitons in vertical-cavity surface-emitting lasers [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014
We investigate a control of the motion of localized structures (LSs) of light by means of delay feedback in the transverse section of a broad area nonlinear optical system. The delayed feedback is found to induce a spontaneous motion of a solitary LS that is stationary and stable in the absence of feedback.
Tlidi, Mustapha   +5 more
openaire   +5 more sources

Vertical-Cavity Surface-Emitting Lasers [PDF]

open access: yesMRS Bulletin, 2002
AbstractThis issue of MRS Bulletin presents a review of the progress that vertical-cavity surface-emitting lasers (VCSELs) have made throughout the wavelength spectrum. A VCSEL is a semiconductor laser diode in which light propagates normal to the epitaxial layers.
Kevin L. Lear, Eric D. Jones
openaire   +3 more sources

Single-Chip Switchable Dual-Wavelength Vertical External-Cavity Surface-Emitting Laser

open access: yesCrystals, 2023
Dual-wavelength output devices have a wide range of applications in mid-infrared band difference frequency generation, anti-interference lidar, dual-wavelength holographic interferometry, and other applications.
Zhuo Zhang   +11 more
doaj   +1 more source

Sub-40 GHz Broadband Polarization Chaos Generation Using Mutually Coupled Free-Running VCSELs

open access: yesPhotonics, 2023
We propose a simple method to generate broadband polarization chaos using two mutually coupled free-running vertical-cavity surface-emitting lasers (VCSELs).
Haofan Bian   +8 more
doaj   +1 more source

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