In this work, two-photon polymerization three-dimensional laser writing is used to integrate a microlens on the surface of single mode polarization-stable vertical-cavity surface-emitting (VCSEL) be as current-driven tunable source in compact optical guided-wave gas sensor. The conditions are optimized enable on-demand room temperature and single-step fabrication at post-mounting stage. We show...

We report on a novel high power vertical cavity surface emitting laser (VCSEL) with order shallow grating, which enables single mode operation even for 6 mm long devices. A of over 3 W is obtained under pulsed operations oxide aperture. fan-shape beam sub-degree narrow divergence up to injection currents 5 A. Thanks the low effective index slow-light modes in VCSEL structure, grating pitch 2.5 ...

We report on a polarization modulation in vertical cavity surface emitting lasers (VCSEL), based on RF electrical injection. Complex polarization dynamics in the single mode regime is studied as a function of RF frequency and power at different bias currents. It has been observed that the polarization state of the VCSEL can be altered by changing the frequency of RF current modulation. Time res...

This paper discusses the issues involving the design and fabrication of vertical-cavity surface-emitting lasers (VCSEL’s). A review of the basic experimental structures is given, with emphasis on recent developments in distributed Bragg reflectors, gain media, as well as current and optical confinement techniques. The paper describes present VCSEL performance, in particular, those involving sel...

We demonstrate adjustable negative chirp from a directly-modulated, injection-locked 1.55-μm VCSEL by controlling the injection parameters. Chromatic dispersion tolerance is enhanced by greater than 10X at 10-Gb/s compared to that of a free-running VCSELs. ©2008 Optical Society of America OCIS codes: (230.2035) Dispersion compensation devices, (250.7260) Vertical cavity surface emitting lasers

We report on a study of polarization properties of asymmetric, multimode vertical-cavity surface-emitting lasers (VCSEL) subjected to electrical RF modulation. When subjected to RF modulation, complex frequency-dependent polarization properties, especially near the polarization switching point are revealed. We propose a scheme of rapidly switching the two RF frequencies modulating the VCSEL, in...

AOC herein describes a collection of material degradation features observed in Vertical Cavity Surface Emitting Lasers (VCSELs) that have been intentionally degraded with a range of electrostatic discharge (ESD) stress conditions. Failure analysis techniques employed include emission microscopy, Focused Ion Beam (FIB) microscopy and Transmission Electron Microscopy (TEM). The results have enabl...

The design issues for a current injection vertical cavity surface-emitting lasers (VCSEL) operating at 1550 nm is presented using photonic crystal (PC) technology. The design is based on PC slab containing multihole rings with a single defect is introduced at the center which acts as a waveguiding core.

A comprehensive study of the electroluminescence of four longwavelength microcavity devices with InAs/GaInAs quantum dot active regions emitting near 1.3 μm was conducted. The four molecular beam epitaxial grown samples with AlAs oxide aperture confinement layers were fabricated, characterized, and optically modeled. Optical power transmission of the samples was modeled using Matlab and compare...