| 摘要 |
Provided is a laser having a multilayer reflector that suppresses the multimode operation. A vertical cavity surface emitting laser includes a first mirror (1002), a cavity (1000) having an active layer, and a second mirror (1010) that are laminated. The second mirror is a multilayer reflector comprised of a first layer (1014) and a second layer (1012,1022) that are alternately plurally laminated, the second layer having a refractive index higher than that of the first layer. At least one of the plural high refractive index second layers has an oxidized confinement structure having an oxidized region (1016) and a non-oxidized region (1017).
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