MARC details
| 000 -LEADER |
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| fixed length control field |
03343nam a2200289 a 4500 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
2016 |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER |
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| Classification number |
THESES PRESS |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Butler, Thomas, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
Real-time characterisation of dynamic laser fields / |
| Statement of responsibility, etc. |
Thomas Butler. |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Place of production, publication, distribution, manufacture |
Cork : |
| Name of producer, publisher, distributor, manufacturer |
Cork Institute of Technology, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2016 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
ix, 248 pages : |
| Other physical details |
color illustrations, graphs, tables. ; |
| Dimensions |
30 cm |
| 336 ## - CONTENT TYPE |
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| Content type term |
text |
| Content type code |
txt |
| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
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| Media type term |
unmediated |
| Media type code |
n |
| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
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| Carrier type term |
volume |
| Carrier type code |
nc |
| Source |
rdacarrier |
| 490 0# - SERIES STATEMENT |
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| Series statement |
Ph.D - Physical sciences |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Ph.D.) - Cork Institute of Technology, 2016 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographical references. |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
"Many modern technologies rely on laser devices, in areas such as communications, sensing and imaging. Examination and research into the fundamental operational dynamics of lasers and characterisation of laser performances, are a crucial tool in ensuring the quality and effectiveness of laser-based applications. The development of characterisation tools is an important part of improving upon existing technologies and advancing the next generation of devices. In this work, a real-time multiheterodyne detection technique is developed which allows for the study of dynamically varying pulse trains formed by optical frequency combs. Single-shot complex spectrum analysis is performed with a 50 MHz frame-rate on a series of dynamic amplitude and frequency modulated pulse trains. This high time-resolution characterisation method is the first known multiheterodyne technique to be applied to non-periodic waveforms. A real-time electric field reconstruction technique is also presented, for the characterisation of fast frequency-swept lasers. Phase measurement of the laser field output is achieved for a variety of lasers designed for optical coherence tomography applications. Swept sources with bandwidth of up to ~20 THz, and repetition rates of 200 kHz, are studied. The novel 3x3 fibre coupler-based interferometric method is shown to completely recover the complex electric field, enabling analysis of the spectral, temporal, coherence and dynamic properties of these lasers. Compared to pre-existing time-averaging methods, new experimental results demonstrate the ability to completely characterise the laser sweep and imaging properties in a single-shot, showing both inter- and intra-sweep properties. Finally, an optical random number generator scheme is presented, based on the operation of a turbulent fibre laser. Random bit streams of 1 Tb/s are demonstrated. These results are competitive with many state-of-the-art optical systems utilising more complex generation schemes. Furthermore, it is shown that in the absence of an external optical signal, the inherent electrical noise of a modern high-speed analogue-to-digital converter can be leveraged to provide Tb/s generation rates in a highly simple and cost-effective manner". - (Author's abstract) |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Lasers. |
| 9 (RLIN) |
39105 |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Laser industry. |
| 9 (RLIN) |
39099 |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Fiber optics. |
| 9 (RLIN) |
37299 |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Spectrum analysis. |
| 9 (RLIN) |
42802 |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Pulse techniques (Electronics) |
| 9 (RLIN) |
100976 |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) |
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| a |
.b11211210 |
| b |
161006 |
| c |
161005 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Suppress in OPAC |
0 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) |
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| a |
c |
| Operator's initials, OID (RLIN) |
161005 |
| Cataloger's initials, CIN (RLIN) |
m |
| First Date, FD (RLIN) |
a |
| Local |
- |
| -- |
eng |
| -- |
ie |
| h |
0 |