Results 11 to 20 of about 12,505 (251)

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

Vertical-cavity surface-emitting laser with a liquid crystal external cavity [PDF]

open access: bronzeOptics Letters, 2014
A tuneable external cavity consisting of a thin layer of nematic liquid crystal (LC) and a dielectric reflector is placed on the top of a vertical-cavity surface-emitting laser (VCSEL). By changing the voltage across the LC layer, the optical path length of the external cavity can be tuned.
Jeroen Beeckman   +2 more
exaly   +8 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

Lasing properties and carrier dynamics of CsPbBr3 perovskite nanocrystal vertical-cavity surface-emitting laser. [PDF]

open access: goldNanophotonics, 2023
He Y   +11 more
europepmc   +3 more sources

Nonlinear Dynamics of Vertical-Cavity Surface-Emitting Lasers [PDF]

open access: hybridAdvances in Optical Technologies, 2011
Nonlinear dynamics of Vertical-Cavity Surface-Emitting Lasers (VCSELs) induced by optical injection, optical feedback, current modulation and mutual coupling is reviewed. Due to the surface emission and cylindrical symmetry VCSELs lack strong polarization anisotropy and may undergo polarization switching.
Krassimir Panajotov   +4 more
openalex   +5 more sources

Ultra-flexible near-infrared vertical cavity surface emitting laser for skin-compatible photoplethysmography monitoring [PDF]

open access: goldnpj Flexible Electronics
Wearable photoplethysmography (PPG) demands stable, long-term light emitters capable of operating under continuous skin contact. Vertical-cavity surface-emitting lasers (VCSELs) offer narrow spectral linewidths, directional emission, and low power ...
Younghan Yook   +9 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

The relative intensity noise of a vertical-cavity surface-emitting laser with a fiber Bragg grating external cavity [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2021
The research deals with the topical problem of stabilizing the optical parameters of a single-mode vertical-cavity surfaceemitting laser. A solution to the problem is proposed by forming an external cavity based on a Bragg grating induced into an optical
Vladimir A. Shulepov   +2 more
doaj   +1 more source

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   +8 more sources

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