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Title: | Part A: Detectors for 10.6 Micron Tea CO2 Laser Radiation, Part B: Modulator for Active Mode-Locking |
Authors: | Malcolm, John W. T. |
Department: | Engineering Physics |
Publication Date: | 1972 |
Abstract: | <p>In this report various means of infra-red laser radiation detection were investigated. For the measurement of the energy of pulses of 10.6 μm laser radiation for energies up to 15-20 joules and also for energies up to 200 joules, two pyroelectric detector designs were researched. These two detector designs acted as monitors, using 10% of the beam for detection and allowing 90% to be used for other purposes. Responsivities of as much as 120 mV/J for the 15-20 joule detector and 16.7 mV/J for the 200 joule detector were obtained.</p> <p>Also three types of photon drag materials, used for pulse shape analysis and power detection were investigated. InAs and Te were compared to Ge for a possible faster and more sensitive alternative. Also a means of impedance matching and amplifying the output of these rather low sensitivity detectors using a magnetic current probe was analyzed.</p> <p>Finally an inexpensive and easily constructed container and mount for the 15-20 joules pyroelectric detector was designed along with an attachment to the Lumonics series 100 TEA lasers for ease of alignment with the beam.</p> |
Description: | Title: Part A: Detectors for 10.6 Micron Tea CO2 Laser Radiation, Part B: Modulator for Active Mode-Locking, Author: John W. T. Malcolm, Location: Thode |
URI: | http://hdl.handle.net/11375/19588 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Malcolm_John_W_T_1972_master.pdf | Title: Part A: Detectors for 10.6 Micron Tea CO2 Laser Radiation, Part B: Modulator for Active Mode-Locking, Author: John W. T. Malcolm, Location: Thode | 14.5 MB | Adobe PDF | View/Open |
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