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Polarization modes in long-wavelength Vertical-Cavity Surface-Emitting Lasers (VCSELs) and VCSEL-arrays

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Multimode optical fibers are the backbone of telecommunication and medical imaging. When light with high intensity travels through a multimode fiber, photons and matter start to interact and propa-gation becomes nonlinear. The nonlinear propagation of ligh ...

EPFL2021

High-Power 760 nm VECSEL Based on Quantum Dot Gain Mirror

Elyahou Kapon, Grigore Suruceanu, Alexandru Mereuta, Andrei Caliman, Nicolas Chevalier

We report high-power second-harmonic generation of 760 nm laser light from optically-pumped vertical-external-cavity surface-emitting laser based on quantum dot active medium. The laser generates 1.2 W in fundamental transverse mode with fixed linear polar ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Broadened Bandwidth Amplified Spontaneous Emission from Blue GaN-Based Short-Cavity Superluminescent Light-Emitting Diodes

Nicolas Grandjean, Jean-François Carlin, Raphaël Butté, Hua Zhang, Denis Martin, Ching-Wen Shih

We report broad bandwidth blue superluminescent light-emitting diodes (SLEDs) based on a short-cavity active region. The dependencies of amplified spontaneous emission (ASE) output power and gain bandwidth on cavity length were investigated in devices whos ...

ELECTROCHEMICAL SOC INC2019

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We experimentally investigate the Lamb coupling constant C in InGaAlAs Quantum Wells active medium. An Optically-Pumped Vertical-External-Cavity Surface-Emitting Laser emitting at 1.54 mu m is designed to sustain the oscillation of two orthogonally polariz ...

IEEE2019

Polarization mode control of long-wavelength VCSELs by intracavity patterning

Elyahou Kapon, Benjamin Dwir, Alexandru Mereuta, Vladimir Iakovlev, Alexei Sirbu, Andrei Caliman, Zlatko Mickovic, Christopher Michael Long

Polarization mode control is enhanced in wafer-fused verticalcavity surface-emitting lasers emitting at 1310 nm wavelength by etching two symmetrically arranged arcs above the gain structure within the laser cavity. The intracavity patterning introduces bi ...

Optical Soc Amer2016

A 1.5-W frequency-doubled semiconductor disk laser tunable over 40 nm at around 745 nm

Elyahou Kapon, Vladimir Iakovlev, Alexei Sirbu

We report on a semiconductor disk laser emitting 1.5 W of output power at the wavelength of 745 nm via intracavity frequency doubling. The high power level and the >40 nm tuning range make the laser a promising tool for medical treatments that rely on phot ...

Spie-Int Soc Optical Engineering2016

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We present the static and optical injection response of wafer-fused long-wavelength VCSELs with and without intracavity patterning. It is found that the extra optical cavity patterning increases the gain anisotropy between orthogonal polarization modes, in ...

Ieee-Inst Electrical Electronics Engineers Inc2015

Air-suspended TiO2-based HCG reflectors for visible spectral range

Georg Rossbach, Ehsan Hashemi

For GaN-based microcavity light emitters, such as vertical-cavity surface-emitting lasers (VCSELs) and resonantcavity light emitting diodes (RCLEDs) in the blue-green wavelength regime, achieving a high reflectivity wide bandwidth feedback mirror is truly ...

Spie-Int Soc Optical Engineering2015

This paper reports on a numerical analysis of methods for current injection into AlInGaAs/InP tunnel-junction electrically pumped vertical-external-cavity surface-emitting lasers. The tunnel junction is patterned to minimize the current crowding effect and ...

Ieee-Inst Electrical Electronics Engineers Inc2015

Effect of Cavity Lifetime Variation on the Static and Dynamic Properties of 1.3-μm Wafer-Fused VCSELs

Elyahou Kapon, Alexandru Mereuta, Vladimir Iakovlev, Alexei Sirbu, Andrei Caliman, Zlatko Mickovic, Dalila Ellafi

We investigate experimentally the impact of photon cavity lifetime variations on the static and dynamic performance of high-speed 1.3-mu m wavelength wafer-fused vertical-cavity surface-emitting lasers (VCSELs). The photon lifetime is modified by decreasin ...

Ieee-Inst Electrical Electronics Engineers Inc2015