Broadband subwavelength grating mirror and its application to vertical-cavity surface-emitting laser

Various high-index-contrast sub-wavelength grating (HCG) mirror designs have been investigated. It reveals that transverse magnetic (TM-) and transverse electric (TE-) HCG reflect the incident fields in quite different ways and that the TM-HCG enables very thin gap below the grating. Based on these...

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Bibliographic Details
Main Authors: Il-Sug Chung, Mork, J., Gilet, P., Chelnokov, A.
Format: Conference Proceeding
Language:English
Subjects:
Couplings
Distributed Bragg reflectors
grating
Gratings
Mirrors
photonic crystal
Reflection
Surface emitting lasers
VCSEL
Vertical cavity surface emitting lasers
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Summary:Various high-index-contrast sub-wavelength grating (HCG) mirror designs have been investigated. It reveals that transverse magnetic (TM-) and transverse electric (TE-) HCG reflect the incident fields in quite different ways and that the TM-HCG enables very thin gap below the grating. Based on these results, a new HCG VCSEL design with a thin oxide gap has been suggested. The thin oxide gap structure has a number of advantages including easier fabrication, better mechanical stability, and very strong single-mode properties.
ISSN:2162-7339
DOI:10.1109/ICTON.2008.4598602