ENGLISH

Quantum Enhancement of a 4 km Laser Interferometer Gravitational-Wave Detector

By Sheon S. Y. Chua

Book information

Publisher
Springer
Year
2015
ISBN
3319176854, 9783319176857, 9783319176864
DOI
10.1007/9783319176864
ISSN
2190-5053
Language
english
Format
PDF
Filesize
10 MB (10476114 bytes)
Series
Springer Theses
Edition
2015
Pages
C, XX, 220\229
Orientation
portrait
Paginated
yes
Scanned
no
Time added
2015-05-15 15:56:06
Classical and Quantum Gravitation Relativity Theor

Description

Nominated for Springer Theses by the Gravitational Waves International Committee (GWIC) Winner of 2013 GWIC Thesis Prize – The annual prize for an outstanding Ph.D. thesis based on research in gravitational waves Presents the first ever measurement of squeezing enhancement in a full-scale suspended GW interferometer with Fabry-Perot arms Achieved best sensitivity by any Gravitational Wave detector The annual prize for an outstanding Ph.D. thesis based on research in gravitational waves Presents the first ever measurement of squeezing enhancement in a full-scale suspended GW interferometer with Fabry-Perot arms Achieved best sensitivity by any Gravitational Wave detector The work in this thesis was a part of the experiment of squeezed light injection into the LIGO interferometer. The work first discusses the detailed design of the squeezed light source which would be used for the experiment. The specific design is the doubly-resonant, traveling-wave bow-tie cavity squeezed light source with a new modified coherent sideband locking technique. The thesis describes the properties affecting the squeezing magnitudes and offers solutions which improve the gain. The first part also includes the detailed modeling of the back-scattering noise of a traveling Optical Parametric Oscillator (OPO). In the second part, the thesis discusses the LIGO Squeezed Light Injection Experiment, undertaken to test squeezed light injection into a 4km interferometric gravitational wave detector. The results show the first ever measurement of squeezing enhancement in a full-scale suspended gravitational wave interferometer with Fabry-Perot arms. Further, it showed that the presence of a squeezed-light source added no additional noise in the low frequency band. The result was the best sensitivity achieved by any gravitational wave detector. The thesis is very well organized with the adequate theoretical background including basics of Quantum Optics, Quantum noise pertaining to gravitational wave detectors in various configurations, along with extensive referencing necessary for the experimental set-up. For any non-experimental scientist, this introduction is a very useful and enjoyable reading. The author is the winner of the 2013 GWIC Theses Prize. Related Subjects: Classical and Quantum Gravitation, Relativity Theory, Quantum Optics, Quantum Electronics, Nonlinear Optics, Astronomy, Astrophysics and Cosmology

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