Canon Kabushiki Kaisha

Mamoru Uchida

Yasuhiro Nagatomo

Tatsuro Uchida

Toshihiko Ouchi

Tetsuya Takeuchi

Fumio Koyama

Makoto Ogusu

Yuichiro Hori

Tomoyuki Miyamoto

Mitsuro Sugita

Jun Nitta

Hajime Sakata

Hidetoshi Nojiri

Kohei Okamoto

Noriaki Ohguri

Takako Suga

Kobei Okamoto

One or more laser devices, one or more information acquisition devices, one or more imaging systems, and one or more methods for use with same are provided. Embodiments of wavelength-tunable type surface emitting lasers including an active layer and excitation units and for exciting the surface emitting laser are included, and the excitation units excite the active layer of the surface emitting laser so that a carrier occupation state of an energy level that can oscillate different wavelength in different areas of the active layer of the surface emitting laser in the XY in-plane direction is obtained.

Laser device, information acquisition device, and imaging system

Provided is a surface emitting laser that is to be excited by an external light source and in which a light-emitting position is defined. A surface emitting laser includes a pair of reflecting mirrors () and an active layer () that is arranged between the pair of reflecting mirrors () and that is to be excited by light that is radiated from an external light source. A gap is formed between the active layer and one of the pair of reflecting mirrors (), the oscillation wavelength of the surface emitting laser is changed, and a defining structure () that defines a light-emitting region of the active layer () is arranged in at least one of a region between the pair of reflecting mirrors () and a region in at least one of the pair of reflecting mirrors ().

Surface emitting laser, laser array, light source device, information acquisition device, and optical coherence tomography apparatus

A luminescent device including an upper electrode layer, a lower electrode layer and an active layer provided between these electrode layers, the device having such a structure that at least one electrode layer of the upper electrode layer and the lower electrode layer is provided in an in-plane direction of the active layer being divided into plural electrodes, current is injected into plural different regions of the active layer by the plural electrodes to cause emission in plural luminescent regions, and light emitted from one luminescent region of the plural luminescent regions enters in another luminescent region and exits. The device further includes a light receiving portion for detecting light that is emitted from one luminescent region of the plural luminescent regions and does not go through another luminescent region.

Luminescent device, optical coherence tomographic imaging apparatus provided with the luminescent device and control method of the luminescent device

A red surface emitting laser element includes a first reflector, a second reflector including a p-type semiconductor multilayer film, an active layer between the first reflector and the second reflector, and a p-type semiconductor spacer layer between the active layer and the second reflector, the p-type semiconductor spacer layer having a thickness of 100 nm or more and 350 nm or less.

Red surface emitting laser element, image forming device, and image display apparatus

A vertical cavity surface emitting laser includes an active layer between a first reflector and a second reflector and at least either the first reflector or the second reflector includes a two-dimensional photonic crystal. The two-dimensional photonic crystal has a structureshowing an ununiform effective refractive index distribution in the plane of the reflector to realize both a high reflectivity and transverse mode control at the same time.

Vertical cavity surface emitting laser and method of manufacturing two-dimensional photonic crystal of vertical cavity surface emitting laser

A vertical cavity surface emitting laser device includes a first reflective mirror layer, a second reflective mirror layer, and an active layer disposed therebetween, wherein at least one of the first reflective mirror layer and the second reflective mirror layer includes a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction and a part of the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity.

Vertical cavity surface emitting laser device

The present invention provides a sensor device for detecting a substance contained in a fluid comprising a first photonic crystal region, a second photonic crystal region, a first channel which is connected to the first photonic crystal region, and passes the fluid containing the substance therein, a second channel which is connected to the second photonic crystal region, and passes a fluid for reference therein, an optical waveguide which is connected to the first photonic crystal region and the second photonic crystal region, and guides light, and a detecting section for detecting a difference between a light which has passed through the optical waveguide and the first photonic crystal region and a light which has passed through the optical waveguide and the second photonic crystal region.

Photonic crystal and waveguide sensor device

An electronic circuit board having an optical wiring layer sandwiched between two electrical wiring layers. The optical wiring layer is structured to be a two-dimensional optical waveguide. An E/O device and an O/E device are provided in the optical wiring layer or at an interface between the optical wiring layer and the electrical wiring layer. A via piercing the optical wiring layer connects the two electrical wiring layers. It is possible to efficiently input and output light to and from an optical wiring layer.

Electronic circuit board

A photonic circuit board comprises a connection setting circuit, a group of electric wires for connecting the connection setting circuit and a plurality of devices, an optical I/O (input/output) device connected to the connection setting circuit and a two dimensional optical transmission medium connected to the optical I/O device and adapted to transmit optical signals. The connection setting circuit includes a circuit capable of changing the mode of connection of the group of electric wires and the optical I/O device.

Photonic circuit board

The semiconductor device of the present invention comprises an optical transmission region, and a light receiving part for converting light propagating through the optical transmission region to an electrical signal, wherein the optical transmission region comprises a two-dimensional optical waveguide layer, and wherein at least a portion of the light receiving part is embedded in the optical transmission region, whereby the present invention can provide a semiconductor device having reduced direction dependency when light propagating through the optical transmission region is received.

Semiconductor device, optoelectronic board, and production methods therefor

In a layered board, an insulating layer is interposed between a first layer capable of transmitting an electrical signal or an optical signal and a second layer capable of transmitting the electrical signal or the optical signal, interconnection of the signal between the first layer and the second layer is established through a signal connecting path penetrating the insulating layer, and the signal connecting path has both a function of transmitting the electrical signal and a function of transmitting the optical signal. An apparatus including the layered board may be constructed as a cellular phone.

Layered board, and apparatus incorporating such layered board

In a layered board, an insulating layer is interposed between a first layer capable of transmitting an electrical signal or an optical signal and a second layer capable of transmitting the electrical signal or the optical signal, interconnection of the signal between the first layer and the second layer is established through a signal connecting path penetrating the insulating layer, and the signal connecting path has both a function of transmitting the electrical signal and a function of transmitting the optical signal.

Growing community of inventors

Yokohama, Japan

Mamoru Uchida