Laser diode module

A laser diode module comprising:

• a laser diode;
• means for supplying to said laser diode a drive current obtained by superimposing a modulation current on a bias current;
• a thermoelectric cooling element for cooling said laser diode according to a control current supplied;
• and
• means for extracting said bias current from said drive current and supplying said bias current extracted as said control current to said thermoelectric cooling element.

A laser diode module comprising:

• a housing;
• a thermoelectric cooling element having a first surface and a second surface, said first surface being in close contact with an inner surface of said housing for performing heat exchange between said first surface and said second surface according to a supplied control current;
• a base having a third surface and a fourth surface, said third surface being in close thermal contact with said second surface of said cooling element;
• a laser carrier and a thermistor carrier both provided on said base in close thermal contact with said fourth surface;
• a laser diode and a thermistor provided respectively on said laser carrier and said thermistor carrier in close thermal contact therewith, and;
• a metal plate directly connected between said base and said housing, separate and distinct from said base, for correcting a temperature balance between said laser diode and said thermistor by thermally connecting a portion of said base to said housing.