Date of Award:
5-2014
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Electrical and Computer Engineering
Committee Chair(s)
Doran Baker
Committee
Doran Baker
Committee
Donald Cripps
Committee
Blake Crowther
Abstract
The design of a precision current controller for quantum cascade lasers (QCLs) enables QCLs to be used for calibrating instruments in space-borne applications. This current controller design will enable constant wave (CW) or pulsed mode operation of QCL devices as calibration sources in a space environment. Any differences in the temperature between components of the current controller can result in an erroneous current through the QCL. This design will use previously demonstrated techniques from Pacific Northwest National Laboratory (PNNL) to minimize the effects of temperature changes on the desired current levels. A mathematical model is used to calculate what performance levels can be expected, and if the board can operate with a desired precision level of 0.1% of the desired power output of the QCL. This mathematical model shows the capability to control to the desired 0.1% output power stability with a change in the boards temperature of ± 10°C.
Checksum
343959bc95a428ac16be90c64181002d
Recommended Citation
Hansen, Stewart M., "Precision Current Control for Quantum Cascade Lasers as Flight Calibration Sources" (2014). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 2022.
https://digitalcommons.usu.edu/etd/2022
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