An electrostatic micro actuator for aligning and tuning an optical cavity on an atom chip
An electrostatic micro actuator for aligning and tuning an optical cavity on an atom chip
In this thesis, a novel concept of a micro-optical and micro-actuated atom chip is presented. Atom chips are micro structured surfaces used for trapping, guiding and manipulating atom clouds. It is of greatest interest for physicists to integrate optical elements with atom chips for purposes of detection and quantum manipulation of cold atoms. In this work a nanopositioning system for an optical micro cavity on an atom chip has been designed. By combining optical micro mirrors, a fibre and an electrostatic comb drive actuator on wafer scale into one single chip a new generation of atom chip has been realized. The idea of an optical tunable micro cavity on an atom chip is original and has not been accomplished up-to-date.
Two inventive actuation design concepts have been investigated. First, a three-dimensional actuator utilizing the electrostatic force generated by four comb drives in xy direction and a parallel plate configuration in z direction to actuate a suspended mass. A micro mirror enclosed in the suspended mass and actuated in the wafer plane (xy) is used to align the optical cavity. The design incorporates a unique locking mechanism which allows the out of the wafer plane actuation to be carried out once the in the wafer plane alignment is completed. Secondly, a more simplified one-dimensional electrostatic comb drive actuator, which is only required to be actuated in the wafer plane in order to tune the optical micro cavity. Both non-standard actuators have been specifically designed and fabricated for atom chip applications. Their features and characteristics are novel and original in their design and function. The overall concept of the single chip solution is of high relevance for future atom chip experiments in the field of atom physics.
University of Southampton
Gollasch, Carsten Olaf
437e87b4-5fc5-40ec-acdd-804bd2c2bc9d
2007
Gollasch, Carsten Olaf
437e87b4-5fc5-40ec-acdd-804bd2c2bc9d
Gollasch, Carsten Olaf
(2007)
An electrostatic micro actuator for aligning and tuning an optical cavity on an atom chip.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
In this thesis, a novel concept of a micro-optical and micro-actuated atom chip is presented. Atom chips are micro structured surfaces used for trapping, guiding and manipulating atom clouds. It is of greatest interest for physicists to integrate optical elements with atom chips for purposes of detection and quantum manipulation of cold atoms. In this work a nanopositioning system for an optical micro cavity on an atom chip has been designed. By combining optical micro mirrors, a fibre and an electrostatic comb drive actuator on wafer scale into one single chip a new generation of atom chip has been realized. The idea of an optical tunable micro cavity on an atom chip is original and has not been accomplished up-to-date.
Two inventive actuation design concepts have been investigated. First, a three-dimensional actuator utilizing the electrostatic force generated by four comb drives in xy direction and a parallel plate configuration in z direction to actuate a suspended mass. A micro mirror enclosed in the suspended mass and actuated in the wafer plane (xy) is used to align the optical cavity. The design incorporates a unique locking mechanism which allows the out of the wafer plane actuation to be carried out once the in the wafer plane alignment is completed. Secondly, a more simplified one-dimensional electrostatic comb drive actuator, which is only required to be actuated in the wafer plane in order to tune the optical micro cavity. Both non-standard actuators have been specifically designed and fabricated for atom chip applications. Their features and characteristics are novel and original in their design and function. The overall concept of the single chip solution is of high relevance for future atom chip experiments in the field of atom physics.
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Published date: 2007
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Local EPrints ID: 466522
URI: http://eprints.soton.ac.uk/id/eprint/466522
PURE UUID: 8ef03111-5234-483c-9f22-9b94bb8e3e79
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Date deposited: 05 Jul 2022 05:36
Last modified: 16 Mar 2024 20:45
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Author:
Carsten Olaf Gollasch
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