Laser emitting device provided with shutter for interrupting laser beam

A laser emitting device comprising:

• a laser source;
• a laser oscillator unit configured to emit a laser beam from the laser source in an emitting direction;
• an electrical part for controlling the laser beam;
• a protection member interposed between the laser oscillator unit and the electrical part, the protection member having an inverse tapered shape in the emitting direction and being arranged to cover at least part of the laser oscillator unit, the protection member having an inner surface facing an outer surface of the laser oscillator unit;
• a shutter disposed to form a prescribed angle with respect to an optical path of the laser beam emitted from the laser oscillator unit, the shutter being movable between a first position at which the shutter interrupts the laser beam and a second position at which the shutter does not interrupt the laser beam;
• and
• a shutter driver configured to move the shutter between the first position and the second position,
• wherein when the shutter is at the first position, the shutter damps and reflects the laser beam as a reflected beam forming the prescribed angle with respect to the shutter, the reflected beam advancing toward a space between the laser oscillation unit and the protection member and being further reflected by the outer surface of the beam oscillation unit and the inner surface of the protection member, and
• wherein a light-absorption layer is formed on the inner surface of the protection member to enable absorption of the reflected beam.