Patent ID: 11901701
Assignee: RICOH COMPANY, LTD.
Field: Optics (Instruments)
Classification: CPC H  G | IPC H

Claim 13:
14. A surface emitting laser element comprising:
a first reflecting mirror;
an active layer over the first reflecting mirror;
a second reflecting mirror over the active layer;
a multilayer film over the second reflecting mirror, the multilayer film having a center portion and a peripheral portion around the center portion in plan view in a direction perpendicular to a principal surface of the second reflecting mirror;
a first portion where the center portion overlaps the second reflecting mirror in the plan view; and
a second portion where the peripheral portion overlaps the second reflecting mirror in the plan view, wherein
the multilayer film has a side surface inclined with respect to the principal surface of the second reflecting mirror and covered with one film, the peripheral portion including the side surface,
the multilayer film includes, in a thickness direction, two or more pairs of a first film having a first refractive index and a second film having a second refractive index higher than the first refractive index, and
the peripheral portion has a reflectivity lower than a reflectivity of the center portion.