Handotal Kenkyu Shinkokai

Handotai Kenkyo Shinkokai

Masakazu Morishita

Tadahiro Ohmi

Junichi Nishizawa

Jun-ichi Nishizawa

A semiconductor laser suitable for incorporation into integrated circuits by providing the laser device with a short resonator dimensioned so as to restrict the power consumption of the device to about 1 mW or less. This is made possible by improving the optical confinement, carrier confinement and the reflectivity of end faces in the lasing cavity with a short length and a narrow stripe width of the cavity. Double-layered mirrors are formed at the two opposed ends of the resonator by depositing a film of dielectric insulating material directly on each end and covering the film with a layer of metal.

Optical integrated circuit

A semiconductor laser includes an anode region of a first conductivity type made of a highly doped region, an active layer adjacent the anode region, a channel region made of a high-resistivity region and adjacent the active layer, a cathode region of a second conductivity type at one end of the channel region which is made of a highly doped region, and a gate region that surrounds at least part of said channel region and which is made of a highly doped region of the first conductivity type. The anode region and channel region have a wider band gap than that of the active layer.

Growing community of inventors

Miyagi, Japan

Masakazu Morishita