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Dissipation and coherent control in ...

Fong, King Yan.

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Dissipation and coherent control in nano-optomechanical systems.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Dissipation and coherent control in nano-optomechanical systems./
作者:	Fong, King Yan.
面頁冊數:	203 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.
Contained By:	Dissertation Abstracts International75-09B(E).
標題:	Engineering, Electronics and Electrical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3580685
ISBN:	9781321051032

Dissipation and coherent control in nano-optomechanical systems.
Fong, King Yan.

Dissipation and coherent control in nano-optomechanical systems. - 203 p.

Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.

Thesis (Ph.D.)--Yale University, 2014.

This item must not be sold to any third party vendors.

This thesis presents experimental realization and theoretical investigation of nanooptomechanical systems on integrated silicon photonic platform with emphasis on noise and dissipation characteristics subject to different operating conditions and environments. First, an ultra-high quality factor nanostring resonators integrated in silicon nitride nanophotonic platform is demonstrated. Because of the high quality factor of the resonator, its frequency noise can be detected and studied with high precision. In such a weakly dissipative system, a sizable frequency fluctuation far above the thermomechanical noise limit has been observed. The observed kTB/ f frequency noise is attributed as the signature of two-level systems in the defect states inside the material. The device is further applied to realize an optically tunable photonic directional coupler.

ISBN: 9781321051032Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Dissipation and coherent control in nano-optomechanical systems.
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100 1 $a Fong, King Yan. $3 3170604
245 1 0 $a Dissipation and coherent control in nano-optomechanical systems.
300 $a 203 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.
500 $a Adviser: Hong X. Tang.
502 $a Thesis (Ph.D.)--Yale University, 2014.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a This thesis presents experimental realization and theoretical investigation of nanooptomechanical systems on integrated silicon photonic platform with emphasis on noise and dissipation characteristics subject to different operating conditions and environments. First, an ultra-high quality factor nanostring resonators integrated in silicon nitride nanophotonic platform is demonstrated. Because of the high quality factor of the resonator, its frequency noise can be detected and studied with high precision. In such a weakly dissipative system, a sizable frequency fluctuation far above the thermomechanical noise limit has been observed. The observed kTB/ f frequency noise is attributed as the signature of two-level systems in the defect states inside the material. The device is further applied to realize an optically tunable photonic directional coupler.
520 $a Next, the fluidic damping of a micro-wheel optomechanical resonator operated in liquid environment is studied. With the highly sensitive cavity-enhanced optical readout, we are able to observe the thermomechanical noise with large signal-tobackground ratio even in the highly dissipative water- environment. A theoretical model is developed to describe the hydrodynamics of the resonator-fluid interaction. The hydrodynamic loading predicted by our model agrees with the experimental results. This device is further integrated with microfluidics to develop a fully integrated platform for optomechanical sensing in atmospheric or liquid environment.
520 $a To apply optomechanical oscillator for sensing applications, understanding of its phase noise characteristics is very- important. For this we present an in-depth theoretical study on the phase noise of a self-sustained optomechanical oscillator. Contributions from thermomechanical noise, cavity vacuum fluctuations and low-frequency technical laser noise are considered. This study addresses the question about the fundamental limit of the phase noise that can be achieved in such a system. Lastly, a hybrid opto-electro-mechanical system combining an optomechanical resonator with microwave piezoelectric actuation is developed. This integration of optomechanics with microwaves provides an extra degree of freedom for coherent control of the system. Enabled by this strong piezoelectric actuation, nonlinear operation of optomechanical system which manifests as multi-phonon scattering is demonstrated. Our demonstration shows that the strong coherent microwave drive can be a useful tool for studying the nonlinear dynamics of optomechanical systems driven in large amplitude. Examining the noise characteristic in this regime will be an interesting topic for further study.
590 $a School code: 0265.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Nanoscience. $3 587832
650 4 $a Physics, Condensed Matter. $3 1018743
690 $a 0544
690 $a 0565
690 $a 0611
710 2 $a Yale University. $3 515640
773 0 $t Dissertation Abstracts International $g 75-09B(E).
790 $a 0265
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3580685