摘要:
A semiconductor laser device according to the present invention includes: a semiconductor laser chip 1 for emitting laser light; a stem 3, 4 for supporting the semiconductor laser chip; a plurality of terminal electrodes, inserted in throughholes provided in the stem 3, 4, for supplying power to the semiconductor laser chip; and a cap 5 having an optical window 6 which transmits laser light and being affixed to the stem 3, 4 so as to cover the semiconductor laser chip 1. Between the stem 3, 4 and the terminal electrodes 7, this device includes insulation glass 8, which does not release silicon fluoride gas when heated to a temperature of no less than 700° C. and no more than 850° C.
摘要:
A semiconductor laser device according to the present invention includes: a semiconductor laser chip 1 for emitting laser light; a stem 3, 4 for supporting the semiconductor laser chip; a plurality of terminal electrodes, inserted in throughholes provided in the stem 3, 4, for supplying power to the semiconductor laser chip; and a cap 5 having an optical window 6 which transmits laser light and being affixed to the stem 3, 4 so as to cover the semiconductor laser chip 1. Between the stem 3, 4 and the terminal electrodes 7, this device includes insulation glass 8, which does not release silicon fluoride gas when heated to a temperature of no less than 700° C. and no more than 850° C.
摘要:
A light source of the present invention includes: a semiconductor light emitting device which has a light emitting face and emits light from part of the light emitting face; a container which has a light transmitting window for transmitting the light and accommodates the semiconductor light emitting device; and a gettering portion for performing gettering of a material containing at least one of carbon and silicon. The gettering portion is positioned, in the container, in a region other than the part of the light emitting face of the semiconductor light emitting device.
摘要:
A light source of the present invention includes: a semiconductor light emitting device which has a light emitting face and emits light from part of the light emitting face; a container which has a light transmitting window for transmitting the light and accommodates the semiconductor light emitting device; and a gettering portion for performing gettering of a material containing at least one of carbon and silicon. The gettering portion is positioned, in the container, in a region other than the part of the light emitting face of the semiconductor light emitting device.
摘要:
A light source of the present invention includes: a semiconductor light emitting device which has a light emitting face and emits light from part of the light emitting face; a container which has a light transmitting window for transmitting the light and accommodates the semiconductor light emitting device; and a gettering portion for performing gettering of a material containing at least one of carbon and silicon. The gettering portion is positioned, in the container, in a region other than the part of the light emitting face of the semiconductor light emitting device.
摘要:
A light source of the present invention includes: a semiconductor light emitting device which has a light emitting face and emits light from part of the light emitting face; a container which has a light transmitting window for transmitting the light and accommodates the semiconductor light emitting device; and a gettering portion for performing gettering of a material containing at least one of carbon and silicon. The gettering portion is positioned, in the container, in a region other than the part of the light emitting face of the semiconductor light emitting device.
摘要:
An optical inspection device 1, comprising a light generation means 2, a light irradiation means 3 irradiating an object to be inspected 4 with light generated from the light generation means 2 and a photodetection means 6 photoelectrically converting signal light obtained from the object to be inspected 4 through irradiation of light by the light irradiation means 3, and inspecting the object to be inspected 4 based on output from the photodetection means 6, wherein a light amplification means 5 amplifying signal light obtained from the object to be inspected 4 is provided. There is thus provided an optical inspection device capable of photoelectrically converting signal light from the object to be inspected with high sensitivity and promptly with its inexpensive configuration without increasing the intensity of light with which the object to be inspected is irradiated and without using an expensive low-noise and high-sensitivity photodetector.
摘要:
An optical pulse source device comprising an optical pulse source (10) emitting an optical pulse train, optical amplifying means (20, 40) amplifying the optical pulse train and a saturable absorber device (30) removing noise floor in the optical pulse train. There is provided an optical pulse source device for multiphoton imaging system being of small size and high stability and capable of improving the SNR by its relatively simple configuration without using a synchronous circuit or an active time gate.
摘要:
Disclosed is a divided electrode type semiconductor layer device designed to improve the separation of electrodes without reducing the amount of doping for carrier injection layers. A double-hetero-structure is formed on a semi-insulating substrate, and at least two pairs of carrier injection clad layers are thereafter buried like lands while a high-resistance portion is left between the carrier injection clad layers to electrically separate these layers. The electrodes are respectively formed on the separated carrier injection layers.
摘要:
A multiphoton-excited measuring device measuring a sample with the use of a multiphoton absorption phenomenon by optical pulses having high intensity, comprising a short pulse light source 2 emitting optical pulses; an irradiation optical system 17, 18, 19 irradiating a sample 20 with optical pulses emitted from the short pulse light source 2; a detector 24 detecting signal light generated, in association with multiphoton excitation, from the sample 20 by the irradiation with optical pulses; and an optical pulse compression means 4, 13 compressing a pulse width, with the use of intensity-dependent nonlinear effects of the optical fiber 4, so that a pulse width of optical pulses with which the sample 20 is to be irradiated is shorten to equal to or narrower than that of optical pulses emitted from the short pulse light source 2 and so that a spectral width of optical pulses with which the sample 20 is to be irradiated is wider than that of optical pulses emitted from the short pulse light source 2, which makes it possible to stably irradiate, with the use of easy-to-use short pulse light source, a sample with optical pulses having higher peak intensity and a shorter temporal width and measure the sample easily with high accuracy without requiring sophisticated laser techniques and skills.