Pulsed high-power AlGaN-cladding-free blue laser diodes on semipolar (202¯1¯) GaN substrates

Autor:	A. Pourhashemi, James S. Speck, Robert M. Farrell, S. P. DenBaars, Kathryn M. Kelchner, Po Shan Hsu, Shuji Nakamura, Matthew T. Hardy
Rok vydání:	2013
Předmět:	Waveguide lasers Blue laser Materials science Physics and Astronomy (miscellaneous) Ridge waveguides business.industry Cladding (fiber optics) Differential quantum efficiency Semiconductor laser theory Optics Optoelectronics business Current density Diode
Zdroj:	Applied Physics Letters. 103:151112
ISSN:	1077-3118 0003-6951
Popis:	We demonstrate high-power AlGaN-cladding-free blue laser diodes (LDs) on semipolar (202¯1¯) GaN substrates with peak output powers and external quantum efficiencies (EQEs) that are comparable to state-of-the-art commercial c-plane devices. Ridge waveguide LDs were fabricated on (202¯1¯) GaN substrates using InGaN waveguiding layers and GaN cladding layers. The devices lased at 454 nm at room temperature. We measured an output power of 2.15 W, an EQE of 39%, and a differential quantum efficiency of 49% from a single facet with a pulsed drive current (current density) of 2.02 A (28.1 kA/cm2).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::73c03ddc8877ef4f15e9998770517608 https://doi.org/10.1063/1.4824773 Zobrazit plný text záznamu