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GaN-based vertical-...
GaN-based vertical-cavity surface-emitting laser incorporating a TiO2 high-index-contrast grating
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- Chang, Tsu-Chi (author)
- National Chiao Tung University
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- Hashemi, Seyed Ehsan, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bengtsson, Jörgen, 1968 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gustavsson, Johan, 1974 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Haglund, Åsa, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lu, Tien-Chang (author)
- National Chiao Tung University
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(creator_code:org_t)
- SPIE, 2020
- 2020
- English.
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In: Proceedings of SPIE - The International Society for Optical Engineering. - : SPIE. - 0277-786X .- 1996-756X. ; 11280
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Abstract
Subject headings
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- 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.
Subject headings
- 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)
Keyword
- electrically driven device
- TiO2
- polarization selectivity
- vertical-cavity surface-emitting laser
- GaN
- VCSEL
- high-index-contrast grating
- HCG
- micro-cavity
Publication and Content Type
- kon (subject category)
- ref (subject category)
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