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

Hashemi, Seyed Ehsan, 1986 (author): Chalmers tekniska högskola,Chalmers University of Technology

Bengtsson, Jörgen, 1968 (author): Chalmers tekniska högskola,Chalmers University of Technology

Gustavsson, Johan, 1974 (author): Chalmers tekniska högskola,Chalmers University of Technology

Haglund, Åsa, 1976 (author): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

SPIE, 2020
2020
English.
In: Proceedings of SPIE - The International Society for Optical Engineering. - : SPIE. - 0277-786X .- 1996-756X. ; 11280

Related links:: https://doi.org/10.1...; show more...; https://research.cha...; show less...

Abstract Subject headings

We demonstrate the first electrically injected GaN-based VCSEL with a TiO2 high-contrast grating (HCG) as the top mirror. The TiO2-HCG rested directly on the n-GaN without an airgap for mechanical stability. A VCSEL with an aperture diameter of 10 mu m had a threshold current of 25 mA under pulsed operation at room temperature. Multiple longitudinal modes coexist around 400 nm, each TM-polarized with a linewidth of 0.5 nm (spectral resolution limited). This first demonstration of a TiO2-HCG VCSEL offers a new route to achieve polarization pinning and could also allow additional benefits such as post-growth setting of resonance wavelength.

NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

By the author/editor: Chang, Tsu-Chi; Hashemi, Seyed E ...; Bengtsson, Jörge ...; Gustavsson, Joha ...; Haglund, Åsa, 19 ...; Lu, Tien-Chang

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Atom and Molecul ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Other Physics To ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Other Electrical ...

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