Patent application number | Description | Published |
20080219308 | Quantum cascade laser - A quantum cascade laser is composed of a semiconductor substrate, and an active layer provided on the semiconductor substrate and having a cascade structure formed by multistage-laminating unit laminate structures | 09-11-2008 |
20080219312 | QUANTUM CASCADE LASER DEVICE - In a quantum cascade laser device | 09-11-2008 |
20090052488 | QUANTUM CASCADE LASER ELEMENT - A DFB quantum cascade laser element that can reliably CW-oscillate a single-mode light even at room temperature or a temperature in proximity thereof is provided. In a quantum cascade laser element | 02-26-2009 |
20110024721 | SEMICONDUCTOR LIGHT EMITTING DEVICE - A semiconductor light emitting device including a semiconductor substrate and an active layer which is formed on the substrate and has a cascade structure formed by multistage-laminating unit laminate structures | 02-03-2011 |
20110026556 | QUANTUM CASCADE LASER - A quantum cascade laser is configured to include a semiconductor substrate and an active layer which is provided on the substrate and has a cascade structure formed by multistage-laminating unit laminate structures | 02-03-2011 |
20110286486 | QUANTUM CASCADE LASER - A quantum cascade laser is configured to include a semiconductor substrate, and an active layer provided on the substrate and having a cascade structure formed by multistage-laminating unit laminate structures | 11-24-2011 |
20120134380 | QUANTUM CASCADE LASER - A quantum cascade laser is configured to include a semiconductor substrate, and an active layer that is provided on the substrate and has a cascade structure formed by alternately laminating emission layers and injection layers by multistage-laminating unit laminate structures each consisting of the quantum well emission layer and the injection layer, and generates light by intersubband transition in a quantum well structure. In a laser cavity structure for light with a predetermined wavelength generated in the active layer, a front reflection film with a reflectance of not less than 40% and not more than 99% for laser oscillation light is formed on the front end face that becomes a laser beam output surface, and a back reflection film with a reflectance higher than that of the front reflection film for the laser oscillation light is formed on the back end face. | 05-31-2012 |
20120219022 | WAVELENGTH-TUNABLE LIGHT SOURCE - A wavelength-tunable light source includes a quantum cascade laser that emits light from a first end and a second end, an optical system that collimates the light emitted from the first end, a first reflecting section on which the light collimated by the optical system is made incident, and a second reflecting section that partially reflects the light emitted from the second end of the quantum cascade laser and transmits the remaining light. The first reflecting section includes a plurality of diffractive gratings whose diffractive properties are different from each other and whose lattice plane directions are variable, and the first reflecting section diffracts a light at a particular wavelength corresponding to the diffractive property and the lattice plane direction of the selected diffractive grating in the direction opposite to the incident direction. | 08-30-2012 |
20130322479 | QUANTUM CASCADE LASER - A quantum cascade laser includes a semiconductor substrate, and an active layer that is provided on the substrate, and has a cascade structure in which emission layers and injection layers are alternately laminated by multistage-laminating unit laminate structures each consisting of the quantum well emission layer and the injection layer, the active layer generates light by intersubband transition in a quantum well structure. Further, in a laser cavity structure for light with a predetermined wavelength to be generated in the active layer, reflection control films including at least one layer of CeO | 12-05-2013 |
20130322480 | QUANTUM CASCADE LASER - A quantum cascade laser includes a semiconductor substrate, and an active layer that is provided on the substrate, and has a cascade structure in which emission layers and injection layers are alternately laminated by multistage-laminating unit laminate structures each consisting of the quantum well emission layer and the injection layer, and generates light by intersubband transition in a quantum well structure. Further, in a laser cavity structure for light with a predetermined wavelength to be generated in the active layer, CeO | 12-05-2013 |
20140030671 | DENTAL THERAPY APPARATUS - A dental therapy apparatus which enables a dental therapy more surely and less invasively is provided. A dental therapy apparatus ( | 01-30-2014 |
20140199798 | QUANTUM CASCADE LASER MANUFACTURING METHOD - A quantum cascade laser manufacturing method includes: a step of pressing a mother stamper against a resin film having flexibility to make a resin stamper | 07-17-2014 |
20140241392 | QUANTUM CASCADE LASER - A quantum cascade laser | 08-28-2014 |