| 摘要 |
A self-sustained pulsating laser diode in which a region in an active layer functions as a saturable absorber has at least five and no more than ten quantum wells, p-type cladding layer flat part with a layer thickness of at least 300 nm and no greater than 500 nm, and a p-type cladding layer flat part with a carrier density of at least 1x1017 cm-3 and no greater than 5x1017 cm-3. This laser diode achieves a sufficiently small current distribution compared with the light distribution in the lateral direction, thereby enabling stable self-sustained pulsating operation up to a high temperature, which was difficult to achieve in the past.
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