| 摘要 |
PURPOSE:To obtain a temperature controller for efficiently cooling a laser diode by providing the diode on an electronic heating/cooling element at one end of a heat pipe, providing another electronic heating/cooling element at the other end of the pipe, and absorbing heat and generating heat by both the elements in response to a temperature. CONSTITUTION:A heat pipe 7 provided at its one end 7 in a circuit housing 6 and exposed at the other end 7b out of the housing 6, a first electronic heating/cooling element 8 attached to the end 7a of the pipe 7, a second electronic heating/cooling element 9 provided oppositely of the other end 7b, a temperature sensor 10 for detecting the temperature around a laser diode, and a temperature controller 11 for absorbing heat and generating heat at the elements 8, 9 in response to the output of the sensor 10 to maintain the temperature at a set temperature are provided. Thus, since the temperature of the diode can be efficiently controlled to a predetermined temperature, the diode can be continuously stably operated. |
