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.
Results
Showing 1 to 13 of 13 for “"frequency metrology"”.
-
Optical frequency division by 3 employing self-phase-locking in periodically poled lithium niobate
… the usable range of octave-spanning optical frequency combs for frequency metrology applications. The divider is based on a self- phase locked optical parametric oscillation in a doubly resonant semi-monolithic optical cavity containing a dual-grating periodically poled lithium niobate. The …
-
Trapping, laser cooling, and spectroscopy of Thorium IV
… eV has significant potential for use in optical frequency metrology and tests of variation of fundamental constants. This work is a report on the development of required technologies to realize such a nuclear optical clock with a single, trapped, laser cooled ²²⁹Th³⁺ ion. Creation, trapping, …
-
High repetition rate fiber lasers
… generation, high speed optical sampling, frequency metrology, and timing and frequency distribution via fiber links, low noise fiber laser sources operating at multi-gigahertz repetition rates are developed systematically. A 200 MHz fundamentally mode-locked soliton laser and a 200 MHz …
-
Octave-spanning lasers for optical metrology applications
This thesis describes the first octave-spanning frequency comb based on a prismless, Ti:sapphire laser. It covers in detail the design and construction of the laser system, as well as the electronic stabilization scheme used to control the frequencies of the mode comb. The system developed is …
-
Studies of third-order nonlinearities in materials and devices for ultrafast lasers
Recent developments in telecommunications, frequency metrology, and medical imaging have motivated research in ultrafast optics. Demand exists for broadband components and sources as well as highly nonlinear fibers and materials. For this thesis, several different devices have been developed for …
-
Scaling and Gating Attosecond Pulse Generation
… attosecond spectroscopy, and high-precision frequency metrology. However, the rather low efficiency of the HHG process, which implies a limited pulse energy and repetition rate, places restrictions on many applications. In this thesis, the scaling of different parameters controlling the …
-
Phononic Frequency Combs
Optical frequency combs have resulted in significant advances in optical frequency metrology and found wide application to precise physical measurements and molecular fingerprinting. A direct analogue of frequency combs in the phononic or acoustic domain has not been reported to date. This thesis …
-
The NICE-OHVMS technique: realizing the full potential of precision molecular ion spectroscopy
… pathlength of the light through the absorber, frequency modulation (heterodyning) encodes the detected signal at radio frequencies to minimize the 1/f noise, and velocity modulation makes the technique specific to ions. The optical cavity also results in a large power enhancement through the …
-
Long-wave infrared frequency combs based on quantum cascade lasers
… as trace-chemical sensing, health monitoring, frequency metrology, noninvasive imgaing and infrared countermeasures. The LWIR region (or mid-infrared region), roughly ranging from 2-20 [mu]m, is of particular importance to spectroscopy applications, since many molecular species have their …
-
Investigation of nonlinear processes and device designs applicable to the creation of a compact, broadly tunable laser based on a tantalum pentoxide planar lightwave circuit platform
… optical coherence tomography<br/>(OCT), frequency metrology, pulse compression, wavelength division multiplexing (WDM) and hence, attracts great research interests. Up to now, about 99% of the SC devices are based on optical fibres or nonlinear crystals. This thesis starts an in depth …
-
3 GHz Yb-fiber laser based femtosecond sources and frequency comb
… ratio and reduce data acquisition time. In the frequency domain, a higher repetition rate means the comb line spacing is larger. This permits access to and manipulation of each individual comb line. Such capabilities have opened numerous frequency-domain applications including optical arbitrary …
-
High accuracy Yb optical lattice clock: frequency comparisons and contributions to International Atomic Time
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Advancing Optical Lattice Clocks: Accurate Measurements on a Bosonic System and Development of a Hybrid Cavity-Lattice Clock
L'abstract è presente nell'allegato / the abstract is in the attachment