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

Claim 0:
1. 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 including one film inclined with respect to the principal surface of the second reflecting mirror, 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
a first reflectivity of the first portion is greater than a second reflectivity of the second portion.