Optical device, laser beam source, laser apparatus and method of producing optical device

A laser device comprising:

• a laser light source comprising:
• a semiconductor laser for radiating laser light:
• a solid state laser crystal for receiving laser light radiated from the semiconductor laser and generating a fundamental wave;
• and an optical wavelength conversion element for generating a harmonic wave based on the fundamental wave;
• a modulator for modulating an output intensity of the harmonic wave;
• and
• a deflector for changing a direction of the harmonic wave emitted from the laser light source,
• wherein periodic domain inverted structures are formed in the optical wavelength conversion element,
• a wavelength of the fundamental wave incident on the optical wavelength conversion element is set to be constant, and
• an optical waveguide is further formed in the optical wavelength conversion element;
• and
• a width and a thickness of the optical waveguide are each 40 μm or greater.

A laser device comprising:

• three laser light sources for generating red, green and blue laser light beams;
• a modulator for changing an intensity of each of the laser light beams;
• and
• a deflector for changing a direction of each of the laser light beams;
• wherein at least one of the three laser light sources is formed by a semiconductor laser, a solid state laser crystal for receiving laser light from the semiconductor laser and generating a fundamental wave, and an optical wavelength conversion element for generating a harmonic wave from the fundamental wave,
• wherein periodic domain inverted structures are formed in the optical wavelength conversion element, and
• a wavelength of the fundamental wave incident on the optical wavelength conversion element is set to be constant.

A laser device comprising:

• three laser light sources for generating red, green and blue laser light beams;
• a modulator for changing an intensity of each of the laser light beams;
• and
• a deflector for changing a direction of each of the laser light beams;
• wherein at least one of the three laser light sources is formed by a semiconductor laser, a solid state laser crystal for receiving laser light from the semiconductor laser and generating a fundamental wave, and an optical wavelength conversion element for generating a harmonic waive from the fundamental wave,
• periodic domain inverted structures are formed in the optical wavelength conversion element,
• a wavelength of the fundamental wave incident on the optical wavelength conversion element is set to be constant,
• an optical waveguide for guiding the laser light is further formed in the optical wavelength conversion element, and
• a width and a thickness of the optical waveguide are each 40 μm or greater.

A laser device comprising:

• a laser light source comprising:
• a semiconductor laser for radiating laser light;
• a solid state laser crystal for receiving laser light radiated from the semiconductor laser and generating a fundamental wave;
• and an optical wavelength conversion element for generating a harmonic wave based on the fundamental wave;
• a modulator for modulating an output intensity of the harmonic wave;
• and
• a deflector for changing a direction of the harmonic wave emitted from the laser light source,
• wherein periodic domain inverted structures are formed in the optical wavelength conversion element,
• an optical waveguide is further formed in the optical wavelength conversion element, and
• a width and a thickness of the optical waveguide are each 40 μm or greater.

A laser device comprising:

• three laser light sources for generating red, green and blue laser light beams;
• a modulator for changing an intensity of each of the laser light beams;
• and
• a deflector for changing a direction of each of the laser light beams;
• wherein at least one of the three laser light sources is formed by a semiconductor laser, a solid state laser crystal for receiving laser light from the semiconductor laser and generating a fundamental wave, and an optical wavelength conversion element for generating a harmonic wave from the fundamental wave,
• periodic domain inverted structures are formed in the optical wavelength conversion element,
• an optical waveguide for guiding the laser light is further formed in the optical wavelength conversion element, and
• a width and a thickness of the optical waveguide are each 40 μm or greater.