Shimadzu Corporation

Mamoru Hisamitsu

Kazutomo Kadokura

Kazuya Inoue

Katsuhiko Tokuda

Ryosuke Nishi

An optical fiber laser module is provided with an optical fiber () for diffusing light, and a laser module housing () connected to the optical fiber. The laser module housing is provided with a laser light source () that outputs laser light to the optical fiber, and a light detector () that detects laser light that has been wave-guided through the full length of the optical fiber. The optical fiber is provided with: a light incident part () provided inside the laser module housing, laser light from the laser light source being incident on the light incident part; and a terminal part () on which is formed a reflective film () that reflects the laser light that was incident on the light incident part and was wave-guided through the full length of the optical fiber so as to return the laser light to the light incident part.

Optical fiber laser module, lighting device, and treatment device

A periodic polarization reversal electrode, periodic polarization reversal structure forming method and periodic polarization reversal element. The element includes a plurality of stripe electrode sections with a stripe shape extending in parallel at a gap from each other, arranged in contact with the +Z surface of a ferroelectric crystal substrate; an insulation film arranged over the +Z surface so as to cover the plurality of stripe electrode sections; and an equipotential electrode section which has a portion that opposes at least a part of each of the plurality of stripe electrode sections across the insulation film and is arranged over the insulation film without contacting the ferroelectric crystal substrate or the plurality of stripe electrode sections, wherein an electric field is generated in the area of the ferroelectric crystal substrate directly below the plurality of stripe electrode sections by applying a voltage to the equipotential electrode section.

Periodic polarization reversal electrode, periodic polarization reversal structure forming method and periodic polarization reversal element

A semiconductor laser excited solid state laser device and method. The device including a semiconductor laser; a driving device; a solid state laser module which has maximum output efficiency at the set temperature and which generates, from excitation light, an output light of a predetermined output level when the optical noise is at or below a fixed level and the output level of the excitation light is the set output level; a single temperature adjustment device which adjusts the temperature of the semiconductor laser and the temperature of the solid state laser module; and a control device which controls the driving device such that the output light will be at the predetermined output level and controls the temperature adjustment device such that the temperature of the semiconductor laser and the solid state laser module will be the set temperature.

Semiconductor laser excited solid state laser device and laser light output method

The outer shape of a surface to be bonded of a first optical crystal member is formed as a shape in which the length in a direction parallel to an optical axis of the first optical crystal member differs from the length in a direction perpendicular to the optical axis of the first optical crystal member. The outer shape of a surface to be bonded of a second optical crystal member is formed as a shape coinciding with the outer shape of the surface to be bonded of the first optical crystal member or a shape obtained by enlarging or reducing the coinciding shape in an orientation in which an optical axis of the second optical crystal member and the optical axis of the first optical crystal member are adjusted to a prescribed angle.

Growing community of inventors

Kyoto, Japan

Mamoru Hisamitsu