Title
Optically pumped vertical-cavity surface-emitting lasers at 375 nm with air-gap/Al<inf>0.05</inf>Ga<inf>0.95</inf>N distributed Bragg reflectors
Date Issued
01 January 2019
Access level
metadata only access
Resource Type
conference paper
Author(s)
Park Y.
Detchprohm T.
Mehta K.
Wang J.
Jeong H.
Liu Y.
Chen P.
Wang S.
Shen S.
Yoder P.
Dupuis R.
Publisher(s)
SPIE
Abstract
Optically pumped VCSELs with a 1λ thick optical cavity lasing at 375 nm have been demonstrated using a pulsed 248 nm KrF excimer laser source. To realize a high-reflectivity mirror on the bottom of the cavity, five-period airgap/ Al0.05Ga0.95N DBRs with a large refractive index contrast have been employed while the top mirror was formed by dielectric DBRs consisting of twelve pairs HfO2/SiO2. The lowest threshold incident power density measured at room temperature was estimated to be ∼270 kW/cm2. The achieved optically pumped VCSEL demonstrates the possibility that the airgap/AlxGa1-xN DBRs can be used as a mirror for injection laser devices.
Volume
10938
Language
English
OCDE Knowledge area
Química física
Subjects
Scopus EID
2-s2.0-85065649685
ISBN
9781510625181
ISSN of the container
0277786X
ISBN of the container
978-151062518-1
Conference
Proceedings of SPIE - The International Society for Optical Engineering
Sponsor(s)
The authors acknowledge the financial support from a subcontract of Microsemi Corporation, CA. under the DARPA/MTO ACES program (Program manager: Dr. Robert Lutwak and Dr. John Burke; Contract #: PB92205BV/HR-0011-16-C-120). Additional support from the Georgia Research Alliance and the Steve W. Chaddick Chair in Electro-Optics is gratefully acknowledged. The authors wish to thank O. Moreno for his preliminary work on EC etching experiments and the staff in the Institute of Electronics and Nanotechnologies (IEN) at Georgia Institute of Technology for their support for cleanroom operations.
Sources of information:
Directorio de Producción Científica
Scopus