  We describe the construction and operation of an external cavity diode laser
in which the diode is cooled to -45 C. This technique allows us to pull the
wavelength of a nominally 782 nm diode to operate at 766.7 nm, a change of over
15 nm. The important aspects of our design are its ease and low cost as
compared to other designs of changing the operating wavelength of laser diodes.
We provide background information on thermal design with multiple TECs so the
reader can extend this example for use in their own applications.
