Surface emitting laser diode with bent waveguide

Ogura, Mutsuo; Wu, Ming-chiang; Hsin, Wei; Whinnery, John R.; Wang, Shyh
March 1987
Applied Physics Letters;3/23/1987, Vol. 50 Issue 12, p705
Academic Journal
A surface emitting laser diode (SELD) with a bent double heterostructure is fabricated on a grooved substrate. This SELD has a facet angle of 20 ° and lased at a threshold current of 120 mA. The external quantum efficiency is 33%. The far-field pattern has sharp peaks at 10 ° and 18 ° and wider emission bands between 25 ° and 45 °. Radiation loss by the bent waveguide is also estimated by the equivalent current source model.


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