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 170 for “"Repetition rate"”.
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High repetition rate fiber lasers
This thesis reports work in high repetition rate femtosecond fiber lasers. Driven by the applications including optical arbitrary waveform generation, high speed optical sampling, frequency metrology, and timing and frequency distribution via fiber links, low noise fiber laser sources operating at …
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Analysis of high repetition rate thyratrons
Not available
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High repetition rate Ti:Sapphire modelocked laser
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
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High repetition rate fiber and integrated waveguide femtosecond lasers
… of astronomical spectrographs, multi-GHz repetition rate femtosecond lasers with robust performance metrics, low cost, and a compact footprint are highly desirable. In this thesis, different approaches to develop GHz mode-locked laser systems at telecommunication wavelengths are discussed …
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Integrated high-repetition-rate femtosecond lasers at 1.55 [mu]m
… as electronic circuits. A monolithically integrated mode-locked laser can lower the cost of building such femtosecond lasers and, at the same time, make them less vulnerable to environmental perturbation. This can be achieved by mass-producing them with less expensive materials such as silicon, …
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Applications and noise properties of high repetition rate : TiSapphire frequency combs
… optical spectrum and highest fundamental pulse repetition rates directly from the laser cavity. Recent advances in laser diode technology have reduced the cost of pump lasers for Ti:Sapphire based frequency combs considerably, and the recent demonstration of direct diode pumping of a narrowband …
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Development of a High Repetition Rate, Electro-optically Q-switched Ho:YAG Laser
… the aim of this research was to develop a high repetition rate, electro-optically Q-switched Ho:YAG laser capable of meeting the requirements for these applications, and as a result, investigate if it is theoretically capable of pumping an optical parametric oscillator. The basis of the research …
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Laser Diagnostic Techniques with Ultra-High Repetition Rate for Studies in Combustion Environments
… up to eight image frames, and having a framing rate up to the megahertz range were originally set up for these types of studies. Within the framework of this thesis, further developments of this high-speed diagnostic system aiming at extending the wavelength palette and thus the range of …
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Stabilization techniques and silicon-germanium saturable absorbers for high repetition rate mode-locked lasers
… mode-locked solid-state lasers at highest repetition rates has been prevented by Q-switching instabilities and the lack of integrable saturable absorbers to date. In this thesis we demonstrate in theory and experiment that active feedback electronics controlling the intracavity loss of the …
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High repetition rate mode-locked erbium-doped fiber lasers with complete electric field control
… thesis work, we describe the development of high repetition-rate fiber laser-based systems for the realization of these applications at 1550 nm wavelengths. To realize these systems, frequency comb sources are needed that are compatible with electric field stabilization techniques, are compatible …
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Variability of phytoplankton production rates in the Atlantic Ocean as observed using the Fast Repetition Rate Fluorometer
… physiology and subsequent production rates within the Atlantic Ocean, as observed using a novel instrument, the Fast Repetition Rate Fluorometer (FRRF). The underlying theory and use of this instrument is described in detail. High resolution FRRF data collection was performed during …
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Investigation of primary productivity along the Atlantic Meridional Transect (50°N to 33°S) through fast repetition rate fluorometry
… were determined using in situ data from fast repetition rate (FRR) fluorometry. Samples were collected along the Atlantic Meridional Transect cruise 11 (AMTll, September-October 2000), between 50°N and 33°S in the Atlantic Ocean. Because of the large-scale nature of the study, consistent …
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Effects of altered prenatal auditory experience on postnatal auditory preferences in bobwhite quail chicks
… frequency, frequency modulation and range, repetition rate, and duration in seconds of notes emitted by the embryos. Based on frequency distributions plotted separately for three of these acoustic features, the vocalizations emitted spontaneously by bobwhite quail embryos were characterized. …
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Self-referenced 1.5 [mu]m fiber frequency combs at GHz repetition rates
… and robust operation and have recently demonstrated performance comparable to their more traditional counterparts. One area for improvement, however, is in the repetition rate of such systems, as fiber frequency combs based on Ytterbium (Yb) and Erbium (Er) technologies currently only operate …
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Development of a head-mount fiber scanning system for imaging in vivo
… The construction of a laser with enhanced repetition rate and the design of a novel non-resonant fiber scanning technique is emphasized. The increased repetition rate of the femtosecond laser source should decrease undesirable non-linear effects when transmitting ultra-short pulses with a …
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Novel broadband light sources and pulse generation techniques at 1.5 [mu]m
… mirrors - one device was developed for low-repetition-rate sub-100-fs ultrafast lasers and the other for high-repetition- rate femtosecond lasers. The third device bypasses generating broadband light directly from a laser altogether through the use of extra-cavity spectral broadening in a …
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High-Speed Optical Sampling Techniques Enabled By Ultrafast Semiconductor Lasers
… sampling techniques are theorised and demonstrated using quantum dot two-section passively mode-locked laser diodes (MLLDs) as an inexpensive and compact source of ultrashort light pulses on the order of a few picoseconds duration.<br/><br/>The first technique, OSBERT (Optical Sampling By …
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