摘要:
A semiconductor laser device in which at least one of the main surfaces of a semiconductor laser crystal body which generates heat during operation is brought into thermal contact with a silicon crystal heat-sink body.
摘要:
A semiconductor laser of the rib guide type having the thickness of an active layer within a stripe-shaped region thicker than that of the outside, and thus the stripe-shaped region is made to have a waveguide action and, thereby, fundamental mode laser may be achieved.
摘要:
A stripe-shaped excitation region is provided in an active layer of a double heterojunction laser device, the excitation region and the other region of the active layer being endowed with an effective refractive index difference or optical absorption coefficient difference therebetween, and a carrier injection region is provided contiguously to the excitation region, whereby the laser device exhibits a low ohmic resistance, effects a stable lower-order transverse mode oscillation and suppresses relaxation oscillations. By preventing the stripe-shaped excitation region and the carrier injection region from being exposed to reflective surfaces, the aforecited beneficial results can be realized over a wide range of operating currents, and a laser device of extremely high power density emission is achieved due to the increase of the threshold of the catastrophic optical damage on mirrors.
摘要:
In a double heterojunction semiconductor laser, extremely high optical power density emission is achieved by forming a stripe-geometry exciting region in an active layer so as not to be exposed on the opposite reflective surfaces, and selecting a band gap of the stripe-geometry exciting region narrower than that of surrounding non-exciting region of the active layer. A pair of window regions formed between the respective reflective surfaces and the tip ends of the stripe-geometry exciting region are sandwiched between a pair of heterojunction interfaces and thus acting low loss optical waveguides. In addition, by providing an optical obstacle region in the vicinity of the window region, higher order modes in horizontal transverse mode oscillations are suppressed, and thereby extremely high optical power output at the fundamental mode can be obtained without causing catastrophic optical damage on the reflective surfaces.
摘要:
A paper note handling apparatus includes a pay-in and pay-out mouth through which a paper note is paid in or paid out, a conveyance for conveying the paper note, a discrimination part to discriminate authenticity and denomination of the conveyed paper note, a temporary hold part to temporarily hold the paper note, a storing part to store the paper note, and a shifter to shift a position of the paper note in a widthwise direction of conveyance. The shifter rotates in a direction inclined relative to a direction of conveyance of the paper note and comes into contact with the paper note to shift the position of the paper note in the widthwise direction of conveyance.
摘要:
A surface treatment apparatus for a metal sheet has a blasting device for blasting solid particles having an average particle diameter of 300 μm or less onto the metal sheet which is continuously transferred, a blast chamber in which the blasting device is disposed, and cleaning means provided at the downstream side of the blast chamber for cleaning a surface of the metal sheet. At an inlet side of the blasting device, a deposits removing device for removing deposits on the surface of the metal sheet may be provided.
摘要:
A paper note handling apparatus includes a pay-in and pay-out mouth through which a paper note is paid in or paid out, a conveyance for conveying the paper note, a discrimination part to discriminate authenticity and denomination of the conveyed paper note, a temporary hold part to temporarily hold the paper note, a storing part to store the paper note, and a shifter to shift a position of the paper note in a widthwise direction of conveyance. The shifter rotates in a direction inclined relative to a direction of conveyance of the paper note and comes into contact with the paper note to shift the position of the paper note in the widthwise direction of conveyance.
摘要:
A sheet handling apparatus is proposed to be able to stably shift a position of a sheet. A sheet handling apparatus comprises: conveyance device for conveying a sheet; shift device, rotating in a direction inclined relative to a direction of conveyance of the sheet, for coming into contact with the sheet to shift a position of the sheet in a widthwise direction of conveyance; and shift presence and absence switching device for switching between a shift execution state, in which shift of the sheet is executed by the shift device, and a shift non-execution state, in which the shift is not executed by the shift device; wherein at least a part of that contact portion of the shift device, which comes into contact with a surface of the sheet, is positioned at a side of a shift direction relative to the conveyance device, which has a conveyance force during shift, and a frictional force of the shift device on the sheet at the time of execution of shift is set to be larger than that of the conveyance device on the sheet.
摘要:
A surface treatment apparatus for a metal sheet has a blasting device for blasting solid particles having an average particle diameter of 300 μm or less onto the metal sheet which is continuously transferred, a blast chamber in which the blasting device is disposed, and cleaning means provided at the downstream side of the blast chamber for cleaning a surface of the metal sheet. At an inlet side of the blasting device, a deposits removing device for removing deposits on the surface of the metal sheet may be provided.
摘要:
A paper currency handling apparatus associated with the present invention has a paper currency storage unit which receives paper currencies, a feeder port which enters or dispenses paper currencies by opening or closing an inner shutter and an outer shutter, a transport path which transports the paper currencies between the feeder port and the paper currency storage unit, open/close control unit which controls open/close operations of the inner shutter and the outer shutter independently, and paper currency posture modification unit which modifies the posture of paper currencies present between the outer shutter and the inner shutter.