Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 810 for “"Diode"”.
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A TUNNEL DIODE ANALOGUE
… non-linear characteristics of a tunnel diode is described. The parameters of the analogue are easily variable enabling the tolerance of circuits t variations in tunnel diode parameters to be readily ascertained. Further, the large magnitude of the parameters and teh small bandwidth makes …
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The diode array velocimeter
… velocimeter has been developed and tested. The diode array velocimeter (DAV) uses a single laser beam for its probe. The DAV measures velocity within a seeded, transparent medium by timing the passage of a seed particle’s image across an array of PIN photodiodes. This prototype device can …
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Analysis of single-diode and improvement of double-diode photovoltaic source modelling methods and techniques
… modelling methods which are based on the single-diode and double-diode models. The study carried out, falls under two sections. The first study was to figure out which single-diode model produces the most accurate results. The second study is extended to double-diode models. Here, the thesis goes …
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Quantum dot gain-lever laser diode
… characteristics of a gain lever QD laser diode is demonstrated for the first time. In this work we report an amplitude modulation enhancement of 8-dB for a p-doped two-section quantum dot laser and discuss the relation between the normalized 3-dB bandwidth and the modulation section gain …
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High-brightness diode-pumped waveguide lasers
… this thesis are advances toward high-brightness diode-pumped planar waveguide (PW) lasers. Efficient and compact planar waveguide lasers are made possible by their geometry, which is compatible with that of high-power diode lasers, has very good thermal management characteristics, and delivers …
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Analysis of laser diode bar degradation
"Laser diode bars capable of producing over 100 Watts of continuous output power are finding increased use in military and industrial applications. These devices have a number of degradation mechanisms, ranging from the propagation of dislocations in the epitaxial layers used to create the p-n …
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Femtosecond nonlinearities in InGaAsP diode lasers
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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Multi-Watt, diode-pumped planar waveguide lasers
This thesis reports on progress towards diode-bar pumped crystal waveguide lasers with a high-power, high-quality output. <br/><br/>It is shown that in order to accommodate the highly divergent, non-diffraction limited output from a diode-bar pump source, a waveguide with a relatively large …
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Ultrashort pulse generation from diode laser devices
… of generation of ultrashort optical pulses from diode lasers. Simple and cost-effective techniques were used to generate high power, high quality optical short pulses at various wavelength windows. The major achievements presented in the thesis is summarised as follows. High power pulses …
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Ion Dynamics in a Spherical Reflex Diode
Made available in DSpace on 2014-12-12T20:55:05Z (GMT). No. of bitstreams: 1 8009023.pdf: 1935726 bytes, checksum: 2dfd8b2992f0a37265a13ae8ef8a3d31 (MD5) Previous issue date: 1979
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Tunnel Diode Oscillator in a Microwave Structure
Made available in DSpace on 2014-12-08T22:24:02Z (GMT). No. of bitstreams: 1 6612462.pdf: 1957502 bytes, checksum: c1b0c3b45a700744d56f8e59ac3f692c (MD5) Previous issue date: 1966
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Broadband pin diode switching and phase shifting
… into the limitations on the bandwidth of PIN diode switches in their different configurations is performed. The Single Pole Double Throw switch constructed with shunt mounted PIN diodes is shown to be bandlimited due to the line lengths involved in the operation. Series mounted diode switches …
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Femtosecond nonlinearities in AlGaAs diode laser amplifers
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Switching characteristics of the varactor-diode parametron
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1960
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A resonant tunneling diode based monostable multivibrator
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Directly diode-laser-pumped titanium-doped sapphire lasers
… would be replaced by compact, robust and cheap diode lasers. Two factors have prevented this: first, Ti:sapphire has a broad but relatively weak absorption in the blue-green region of the spectrum where high-power diode lasers are not currently available; and second, the very short upper laser …
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Novel diode laser absorption techniques for combustion diagnostics
… approach using a modulated continuous wave diode laser is presented in this thesis. The measurements taken using this new technique are compared to measurements of the visible emission from the flame, and previous soot distribution measurements using laser induced incandescence. Absorption …
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