Abstract:
Vorgeschlagen wird eine Lichtquelle (10) mit (a) einem Lichtemitter, welcher ausgebildet ist, einen Lichtstrahl entlang einer ersten Achse auszusenden, wobei der Lichtstrahl einen höchsten Grad anisotroper Kohärenz in einer zweiten Achse senkrecht zur ersten Achse aufweist, und (b) ein Lichtmultiplexer, der optisch nachgeschaltet zum Lichtemitter angeordnet ist, wobei der Multiplexer eine Achse des Multiplexens senkrecht zur ersten Achse aufweist, wobei die zweite Achse und die Achse des Multiplexens zueinander in einem anderen Winkel als 0°, 90°, 180° und 270° orientiert sind.
Abstract:
PROBLEM TO BE SOLVED: To provide a low-coherent, compact and high-efficient laser light source device providing stable and uniform beam profile and beam intensity. SOLUTION: The laser light source device includes: a pump light source 1 which emits transverse-multimode light; a plurality of resonator mirrors 5, 8 and 12 which define a resonator and output the light of different wavelengths to the outside from at least a part; a laser medium 6 pumped with the light of a transverse-multimode pattern emitted from the pump light source 1; and a wavelength conversion element 10 which is irradiated with a transverse-multimode line beam of fundamental waves obtained by oscillation at the laser medium 6 and outputs a line beam of converted waves. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress parasitic oscillation by polarization in a laser resonator by a relatively simple configuration. SOLUTION: Laser light source equipment includes an excitation light source 1, and resonator mirrors 2, 3 for composing a resonator 20. The resonator 20 has a laser medium 5 excited by light from the excitation light source 1, thus outputting light obtained by the oscillation of the resonator 20. A birefringence material is used as the laser medium 5. One end face 5B of the laser medium 5 is set nearly vertical to a resonance optical path, and a polarization film 6 showing polarization properties by birefringence properties is provided. Even if the end face 5B is set to be a vertical surface, a difference in transmittance can be set, the laser medium 5 is made of a birefringence material, thereby light in a desired polarization direction can be oscillated and emitted as light oscillating in the resonator 20. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a compact beam multiplexing element capable of realizing high-luminance output, and an exciting light output device using the same. SOLUTION: The beam multiplexing element is constituted at least of a birefringence material part 1 and a phase difference part 2 arranged at least at a part of the beam incident end face 1A of the material part 1. Then, 1st and 2nd beams Li1 and Li2 (beam group in the case of making a plurality of beams incident) whose propagating directions are nearly parallel and which are made nearly the same polarized light are made incident on the material part 1, and at least either beam Li1 out of the 1st and the 2nd beams is made incident on the material part 1 via the phase difference part 2 so as to change a polarization direction by the phase difference part 2, and the propagating direction of at least either beam out of the 1st and the 2nd beams Li1 and Li2 in the material part 1 is changed, so that the 1st and the 2nd beams are multiplexed at the emitting position of the material part 1 and emitted in nearly the same direction. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a device and method for inspecting the inside of an element which can determine accurately a micro defect caused by laser deterioration. SOLUTION: A laser light source 1 outputs a laser light 8 having a wavelength and strength capable of generating a micro defect inside an element to be inspected 2. As soon as the laser light 8 enters the element to be inspected 2 and then generated a defect therein, the generated defect is irradiated with the same laser light 8 to produce a light scattered and emitted therefrom. These scattered light and emitted light are captured as an image by a video camera 5. In other words, the laser light 8 serves to damage the element to be inspected 2 to generated and develop a defect therein so as to intensify the scattering strength and the like of a light therefrom and serves as an irradiating light to irradiate the generated or developed defect as well. As a result, the deterioration phenomenon of the element to be inspected 2 caused by a laser light can be observed in real time.
Abstract:
PROBLEM TO BE SOLVED: To determine the health state of a subject consistently and satisfactorily.SOLUTION: An information acquisition unit acquires one or both of the medical interview information and the biological information. For example, the information may be acquired via the Internet. Then, a diathesis determination unit determines the diathesis of a subject on the basis of the acquired information. For example, the diathesis determination unit determines the diathesis using classification of combinations of dispositions which the subject innately has and diatheses formed based on the dispositions, in order to perform satisfactorily diathesis determination. For example, the diathesis determination unit also determines the diathesis using a machine learning technique, in order to perform diathesis determination with high accuracy.
Abstract:
PROBLEM TO BE SOLVED: To obtain a beta-barium borate single crystal scarcely causing the scattering of light. SOLUTION: When the beta-barium borate (hereinafter simply referred to as BBO) single crystal 3 is produced by a pulling method, a BBO seed crystal 1 is pulled from a melted liquid 2. Therein, the BBO seed crystal 1 is pulled in a pulling direction of . Thereby, the BBO single crystal 3 scarcely containing light-scattering impurities can be obtained.
Abstract:
PROBLEM TO BE SOLVED: To achieve uniformization and stabilization of output light of a laser light source device including a resonator having a light path along which linear fundamental wave light is reflected. SOLUTION: The laser light source device includes: an excitation light source 1; and a pair of resonator mirrors 5 and 11. A resonator 30 constituted of the resonator mirrors has at least a laser medium 6 and a wavelength conversion element 10 therein. The excitation light source 1 excites the laser medium 6 with a lateral mode pattern, and the linear fundamental wave light obtained through the oscillation of the laser medium 6 is irradiated to the wavelength conversion element 10, thereby a linear converted wave light is output from it. A reflection part 9 for reflecting the light path is arranged in the resonator 30, and the above respective components are arranged on different planes 40a and 40b on a support 40, respectively, through which a longitudinal direction of the linear fundamental wave light is set approximately orthogonal to a light incident surface of the reflection part 9. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To achieve the equalization and the stabilization of output light in a laser light source device comprising a resonator having an optical path in which a linear fundamental wave is folded back. SOLUTION: A laser light source device has an excitation light source 1 and a pair of resonator mirrors 5 and 11. At least a laser medium 6 and a wavelength converting element 10 are provided in a resonator 30 constituted by the resonator mirrors. The laser medium 6 is excited from the excitation light source 1 with light of a transverse mode pattern, the wavelength converting element 10 is irradiated with a linear fundamental wave obtained by the oscillation of the laser medium 6, and consequently a linear converting wave is output. One or more reflective portions 8 and 9 for folding back an optical path are provided in the resonator 30. The longitudinal direction of the linear fundamental wave is arranged approximately vertical to the incident surfaces of the reflective portions 8 and 9. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wavelength conversion element and wavelength conver sion device which are formed by using a nonlinear optical crystal belonging to a point group 3m, such as β-BaB2O4 and are capable of maintaining the wavelength conversion efficiency at a high level, diminishing the variation of the wavelength conversion efficiently in spite of use of the plural crystals, such as β-BaB2O4 crystals, and eventually improving the stability of the device. SOLUTION: The phase matching angle of the type 1 of the wavelength conversion element and wavelength conversion device formed by using the nonlinear optical crystal belonging to the point group 3m, such as β-BaB2O4, is >=45 deg. and the θ and ϕ at the time of phase matching are so set as to approximately satisfy equation I: |sin(3ϕ)|=1, equation II: d22/d31/tanθ/sin (3ϕ)