Back to results
US 8,896,911 B2Granted
Laser system
AssigneeQd Laser, Inc.
InventorsMitsuru Sugawara, Makoto Usami, Tomoyuki Akiyama
Life of this patent
Estimating the term…
Abstract
The present invention is a laser system including a DFB laser 10 emitting a laser light 50, a semiconductor optical amplifier 20 that modulates an intensity of the laser light, and a harmonic generation element 30 that converts the laser light modulated to a visible light 54 that is a harmonic of the laser light. According to the present invention, it is possible to employ the highly efficient harmonic generation element capable of modulating the intensity of the laser light and to reduce power consumption.
Claims10
A laser system comprising:
- a DFB laser emitting a laser light having a constant wavelength by a DC current applied to the DFB laser;
- a semiconductor optical amplifier that modulates an intensity of the laser light by a change of a gain of the semiconductor optical amplifier without changing the wavelength of the laser light;
- and
- a harmonic generation element that converts the laser light modulated to a visible light that is a harmonic of the laser light,
- wherein the constant wavelength is within a range of an effective efficiency of higher than or equal to 80% of the harmonic generation element.
2 more elements
Dependencies are inferred from the claim text.