A temperature controller for laser diode using modulation of an error signal which is proportional to the difference between the sensor temperature and the setpoint temperature is described. By controlling the amplitude of the modulation signal automatically we obtained a temperature stability of ±60 μK at 22.75 °C in a laboratory environment with temperature variations of about 4 K.
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© 1990 American Institute of Physics.
1990
American Institute of Physics
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