A computer-adjustable laser diode temperature control system yielding
+/-2 mK temperature stability is described. An integrated circuit temp
erature sensor and a Peltier heater/cooler are used as the basis of th
is arrangement. Rather than a conventional bridge, a 16-bit A/D conver
ter is incorporated to determine the temperature to high accuracy. The
system is designed primarily to generate rapid temperature scans but
is also capable of maintaining a set point temperature for long period
s.