TUNABLE SEMICONDUCTOR LASER WITH EXTERNAL CAVITY

摘要

PURPOSE: In a wavelength tunable semiconductor laser using the outside resonator is the laser diode chip, the outside type laser is manufactured in the narrow range by minimizing distance to the wavelength tunable filter. CONSTITUTION: A slope mirror(500) is installed in one side of the laser diode chip(100). In the slope mirror is one side section of the laser diode chip, the horizontally emitted laser light is incident made in the wavelength tunable filter(410). A lens(210) collimating the light radiated in the laser diode chip is installed in the wavelength tunable semiconductor laser. The slope mirror is arranged in the optical path between the lens and the laser diode chip. The incline of the slope mirror is formed by evaporating the metallic foil or the dielectric thin film in the ceramic material of the glass or the silicon.