The Furukawa Electric Co., Ltd.

Masaki Iwama

Maiko Ariga

Shunichi Matsushita

Yuta Ishige

Takeshi Yagi

Hiroki Tanaka

Yutaka Hoshino

Yoshihiro Arashitani

Shigehiro Takasaka

Kengo Watanabe

Atsushi Oguri

Nobuyuki Kagi

Kenji Yokomizo

Tomohiro Ishimura

Eisuke Otani

Yoshiki Nomura

A radiation probe includes: an optical fiber including a leak section configured to output leaking light to an outer side in a radial direction as at least a part of a section in a longitudinal direction. The optical fiber includes a scattering area configured to generate the leaking light by scattering light in a predetermined area in a circumferential direction of the optical fiber in the leak section, and the optical fiber has directionality by which an intensity of the leaking light in two radial directions that are approximately parallel to each other is higher than an intensity of the leaking light in another radial direction in an intensity distribution of the leaking light in the circumferential direction in a cross-section intersecting an axial direction of the leak section.

Radiation probe with radial scatter regions with various intensities

For the purpose of efficiently converting a beam profile of laser light with a simple configuration, provided is a beam profile converter including: a first optical fiber that outputs guided light from a first end surface; and a second optical fiber being a multi-mode optical fiber to which the light is input to a second end surface and configured to guide the light, in which a core diameter of the second optical fiber is larger than a core diameter of the first optical fiber at the first end surface, and the light output from the first end surface is input to a core portion of the second end surface at a position separated from an optical axis of the second optical fiber in a direction inclined with respect to the second end surface.

Beam profile converter, catheter device, and laser ablation device

An irradiation spot of the laser beam having a large power density can be formed by a condensing apparatus which combines a plurality of laser lights without using a power combiner. The condensing apparatus comprises an optical fiber bundle formed of a plurality of optical fibers. One end of the optical fiber bundle forms an incident side bundle end, while the other end forms an emission side bundle end. The optical fiber bundle includes, at the emission side bundle end, an optical deflection unit that deflects at least two light beams emitted from respective light emission ends of at least two optical fibers toward different directions, respectively, such that the at least two light beams overlap each other on at least one cross section at rear on an optical path of the emission side bundle end and are then scattered.

Optical fiber bundle with beam overlapping mechanism

A method for manufacturing a substrate with a transparent conductive film, includes emitting subnano-to-nanosecond laser light to a transparent conductive film formed on a surface of a substrate to form a laser-induced periodic surface structure having a corrugated shape in at least a part of the transparent conductive film.

Method for manufacturing substrate with transparent conductive film, substrate with transparent conductive film, and solar cell

A method for manufacturing an intermittent bonding type optical fiber ribbon which is capable of forming non-connection portions and intermittent connection portions between adjacent coated optical fibers formed into an optical fiber ribbon by performing a laser processing for the ribbon through irradiation with a pulse laser light, thereby making it possible to rapidly form the intermittent connection portions and the non-connection portions while maintaining high linear velocity of the coated optical fiber. The non-connection portions and the intermittent connection portions are formed in the obtained intermittent bonding type optical fiber ribbon through the irradiation with the pulse laser light, so the intermittent bonding type optical fiber ribbon becomes the intermittent bonding type optical fiber ribbon, which is capable of securing operability during collective connection and surely being subjected to an intermediate branching without damaging cable characteristics during high density mounting.

Method for manufacturing intermittent bonding type optical fiber ribbon and intermittent bonding type optical fiber ribbon

A semiconductor laser module includes a semiconductor laser device that outputs laser light; an optical fiber that includes a core portion and a cladding portion formed at an outer periphery of the core portion and that receives the laser light from one end and guides the laser light to the outside of the semiconductor laser module; an optical part disposed at an outer periphery of the optical fiber, having optical transmittance at a wavelength of the laser light, and that fixes the optical fiber; a first fixative that fixes the optical part and the optical fiber; and a housing that accommodates the semiconductor laser device and the one end of the optical fiber that receives the laser light, wherein an optical reflection reducing region treated to absorb the laser light and having a rough surface is formed around the optical part.

Semiconductor laser module

An optical module includes a housing and an optical element that is disposed in the housing and emits light in the housing, in which a partial area of a surface inside the housing serves as a reduced optical reflection area processed so as to absorb the light and have a rough surface.

Optical module

A light operation device includes: an light input and output port; an light-operating element reflecting a light input from any one of the ports of the light input and output port and outputting the reflected light to any one of the ports of the light input and output port; a condensing lens system disposed between the light input and output port and the light-operating element and optically-coupling the light input and output port with the light-operating element; an anamorphic optical system disposed between the light input and output port and the condensing lens system and expanding a beam diameter of the light input from a side of the light input and output port in a beam-diameter-expanding direction. In the condensing lens system, a first focal distance in the beam-diameter-expanding direction and a second focal distance in a direction perpendicular to the beam-diameter-expanding direction differ from each other.

Growing community of inventors

Tokyo, Japan

Masaki Iwama