A MICROCONTROLLER-BASED DRIVER TO STABILIZE THE TEMPERATURE OF AN OPTICAL STAGE TO WITHIN 1 MK IN THE RANGE 4-38-DEGREES-C, USING A PELTIERHEAT-PUMP AND A THERMISTOR SENSOR

Authors
SLOMAN AW BUGGS P MOLLOY J STEWART D
Citation
Aw. Sloman et al., A MICROCONTROLLER-BASED DRIVER TO STABILIZE THE TEMPERATURE OF AN OPTICAL STAGE TO WITHIN 1 MK IN THE RANGE 4-38-DEGREES-C, USING A PELTIERHEAT-PUMP AND A THERMISTOR SENSOR, Measurement science & technology, 7(11), 1996, pp. 1653-1664
Citations number
14
Categorie Soggetti
Instument & Instrumentation",Engineering
Journal title
Measurement science & technology → ACNP
ISSN journal
09570233
Volume
7
Issue
11
Year of publication
1996
Pages
1653 - 1664
Database
ISI
SICI code
0957-0233(1996)7:11<1653:AMDTST>2.0.ZU;2-C
Abstract
The resonant-mirror technique makes it possible to measure very small chemically induced changes in the refractive index of a surface layer. These small changes in refractive index can be masked by small change s in the temperature of the surface. By measuring the temperature clos e to the surface with a stable thermistor and digitizing the thermisto r output to 20 bits it proved possible to use a microcontroller to dri ve a Peltier junction via a switching amplifier to stabilize this temp erature to within +/- 1 mK within the range 4-38 degrees C.