Seyed Ehsan Hashemi

GaN-based vertical-cavity surface-emitting laser incorporating a TiO2 high-index-contrast grating

Are blue and ultraviolet VCSELs a reality or just a dream?

Recent progress for blue VCSELs and challenges to move to UV

Electrically Injected GaN-Based Vertical-Cavity Surface-Emitting Lasers with TiO2 High-Index-Contrast Grating Reflectors

Blue and ultraviolet vertical-cavity surface-emitting lasers

Blue and ultraviolet thin-film light emitters

Towards ultraviolet and blue microcavity lasers

Vertical Electrical Conductivity of ZnO/GaN Multilayers for Application in Distributed Bragg Reflectors

GaN vertical-cavity surface-emitting laser with a high-contrast grating reflector

Lasing Action in GaN-Based VCSELs with top High-Contrast Grating Reflectors

Effect of compositional interlayers on the vertical electrical conductivity of Si-doped AlN/GaN distributed Bragg reflectors grown on SiC''

2017

Electrically conductive ZnO/GaN distributed Bragg reflectors grown by hybrid plasma-assisted molecular beam epitaxy

Nanoscale structuring to improve laser performance

Thermal lensing effects on lateral leakage in GaN-based vertical-cavity surface-emitting laser cavities

2016

Progress and challenges in electrically pumped GaN-based VCSELs

2016

Optical Guiding and Feedback Structures in GaN-Based Vertical-Cavity Surface-Emitting Lasers

2015

Optical Guiding and Feedback in Gallium Nitride Based Vertical Cavity Surface Emitting Lasers

2015

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

GaN-based VCSELs

2015

TiO2 membrane high-contrast grating reflectors for vertical-cavity light-emitters in the visible wavelength regime

2014

Analysis of structurally sensitive loss in GaN-based VCSEL cavities and its effect on modal discrimination

Triggering of guiding and antiguiding effects in GaN-based VCSELs

Engineering the Lateral Optical Guiding in Gallium Nitride (GaN)-based Vertical-Cavity Surface-Emitting Laser (VCSEL) Cavities to Reach the Lowest Threshold Gain

2012

Engineering the transverse optical guiding in GaN-based VCSELs to avoid detrimental optical loss