Transverse mode control in wide-single-stripe lasers by loading modal filters

Preliminary studies demonstrate the effectiveness of modal filters for controlling transverse modes in wide-single-stripe SBA (self-aligned bent-active-layer) lasers by means of two methods. The first uses a flared waveguide SBA laser while the other uses a wide-stripe SBA laser with a modal reflect...

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Bibliographic Details
Main Authors: Kaneno, N., Shigihara, K., Aoyagi, T., Hinata, S., Nagai, Y., Mihashi, Y., Seiwa, Y., Ikeda, K., Susaki, W.
Format: Conference Proceeding
Language:English
Subjects:
Coatings
Filters
Laser modes
Optical control
Optical waveguides
Phased arrays
Power lasers
Reflectivity
Semiconductor lasers
Waveguide lasers
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Summary:Preliminary studies demonstrate the effectiveness of modal filters for controlling transverse modes in wide-single-stripe SBA (self-aligned bent-active-layer) lasers by means of two methods. The first uses a flared waveguide SBA laser while the other uses a wide-stripe SBA laser with a modal reflector at the output facet. Both lasers demonstrate single-lobed far-field patterns. These preliminary experiments show that both modal filters are effective for transverse-mode control. Higher output power in the fundamental transverse mode can be attained by combining these two modal filters.< >
ISSN:0163-1918
2156-017X
DOI:10.1109/IEDM.1988.32820