Miniature thermoelectric coolers for semiconductor lasers
- Odessa State Academy of Refrigeration, Odessa (Ukraine)
- EDO Corp./Barnes Engineering Division, 88 Long Hill Cross Rd., Shelton, Connecticut 06484 (United States)
The problem of matching thermoelectric coolers and semiconductor lasers with respect to heat flow densities and electrical currents is discussed. It is shown that the solution of this problem is accomplished by the reduction of thermoelement dimensions to the submillimeter level. Assembled with extruded thermoelectric materials, miniature coolers with a thermoelement length as short as 0.1 mm and a cross section of 0.2{times}0.2 mm{sup 2} are demonstrated. Using 0.5 mm thick aluminum ceramic plates, the overall height of these miniature coolers can be as low as 1.1 mm. The devices are designed for cooling and thermally stabilizing miniature optoelectronic elements, especially semiconductor lasers. The results of device testing over a wide range of temperature and heat loads are given. This novel approach in thermoelectric cooler design represents a new step in miniaturization and reduced current requirements, with little or no loss in maximum attainable temperature difference. A {Delta}{ital T}{sub max} of 68 K is demonstrated with input current of 200 mA. Due to the small thermoelement length, extremely large heat flow densities at cold junctions are practical (up to 100 W/cm{sup 2} at {Delta}{ital T}=0), making these devices ideal for heat intensive local sources such as injection laser diodes. Due to the extremely small sizes, these coolers have a high speed of response where a {Delta}{ital T} of 35 K in specimens with the thermoelement length of 0.1 mm is approximately 150 milliseconds. These micro coolers are ideal for use within the semiconductor device housing and under conditions where limitations of power, size, and electrical current predominate. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 165408
- Report Number(s):
- CONF-940830--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 316; ISSN 0094-243X; ISSN APCPCS
- Country of Publication:
- United States
- Language:
- English
Similar Records
A high performance thin film thermoelectric cooler
Brittle thermoelectric semiconductors extrusion under high hydrostatic pressure