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Long-Wavelength High-Contrast Grating Vertical-Cavity Surface-Emitting Laser

A novel long-wavelength vertical-cavity surface-emitting laser (VCSEL) structure based on a subwavelength high-contrast grating (HCG) as the output mirror has been realized. By design, these devices are highly polarization stable, are single mode at large apertures, and solve the VCSEL-mirror proble...

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Bibliographic Details
Published in:IEEE photonics journal 2010-06, Vol.2 (3), p.415-422
Main Authors: Hofmann, Werner, Chase, Chris, Müller, Michael, Yi Rao, Grasse, Christian, Böhm, Gerhard, Amann, Markus-Christian, Chang-Hasnain, Connie J
Format: Article
Language:English
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Summary:A novel long-wavelength vertical-cavity surface-emitting laser (VCSEL) structure based on a subwavelength high-contrast grating (HCG) as the output mirror has been realized. By design, these devices are highly polarization stable, are single mode at large apertures, and solve the VCSEL-mirror problem at long wavelengths in an elegant way. With cost-effective mass fabrication in mind, the top HCG reflector consists of amorphous silicon on isolator (amorphous silica). The single-mode laser emission is tailored to be around 1320-nm wavelength, targeting applications in high-speed optical data transmission, particularly those for passive optical networks. We report single-mode emission for devices with apertures as large as 11 μm operating in continuous wave with output powers in excess of 0.4 mW. Pulsed operation with output powers up to 4 mW at room temperature is demonstrated as well. This is the first electrically pumped VCSEL structure realized in this wavelength regime utilizing an HCG mirror.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2010.2049009