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Design, fabrication and analysis of a Terfenol-D based magnetostrictive external cavity diode laser sensor with an advanced signal processing capability.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Design, fabrication and analysis of a Terfenol-D based magnetostrictive external cavity diode laser sensor with an advanced signal processing capability./
作者:	Chung, Wing Chiu Russell.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 1999,
面頁冊數:	158 p.
附註:	Source: Dissertations Abstracts International, Volume: 61-05, Section: B.
Contained By:	Dissertations Abstracts International61-05B.
標題:	Electrical engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9940192
ISBN:	9780599416543

Design, fabrication and analysis of a Terfenol-D based magnetostrictive external cavity diode laser sensor with an advanced signal processing capability.
Chung, Wing Chiu Russell.

Design, fabrication and analysis of a Terfenol-D based magnetostrictive external cavity diode laser sensor with an advanced signal processing capability. - Ann Arbor : ProQuest Dissertations & Theses, 1999 - 158 p.

Source: Dissertations Abstracts International, Volume: 61-05, Section: B.

Thesis (Ph.D.)--Iowa State University, 1999.

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

Miniature magnetometer is desired in many applications, such as undersea surveillance, buried landmine detection, vehicle tracking and guidance and personal dosimetry. This dissertation reports the fabrication, and characterization of a miniature magnetometer, which utilizes the highly magnetostrictive material, Terfenol-D and an ultra-short external cavity diode laser sensor. A thin slice of the magneto strictive material, biased by an open magnetic circuit, is configured as an external reflector modulating the effective modal reflectivity of the diode laser cavity in response to an ac magnetic field. The detection limit of the sensor are being investigated and the principle of the device is being examined as an abruptly terminated dielectric waveguide problem. Numerical results are obtained. Furthermore, the spatial variation of the magnetostriction amplitude across the transducer is being examined with a heterodyne interferometer. Suggestions are provided on improving the device performance, and extending the numerical capability to account for non-ideal reflector. Other metrology applications using the diode laser sensor is discussed.

ISBN: 9780599416543Subjects--Topical Terms:

649834
Electrical engineering.
Subjects--Index Terms:

Diode laser sensor

Design, fabrication and analysis of a Terfenol-D based magnetostrictive external cavity diode laser sensor with an advanced signal processing capability.
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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 Miniature magnetometer is desired in many applications, such as undersea surveillance, buried landmine detection, vehicle tracking and guidance and personal dosimetry. This dissertation reports the fabrication, and characterization of a miniature magnetometer, which utilizes the highly magnetostrictive material, Terfenol-D and an ultra-short external cavity diode laser sensor. A thin slice of the magneto strictive material, biased by an open magnetic circuit, is configured as an external reflector modulating the effective modal reflectivity of the diode laser cavity in response to an ac magnetic field. The detection limit of the sensor are being investigated and the principle of the device is being examined as an abruptly terminated dielectric waveguide problem. Numerical results are obtained. Furthermore, the spatial variation of the magnetostriction amplitude across the transducer is being examined with a heterodyne interferometer. Suggestions are provided on improving the device performance, and extending the numerical capability to account for non-ideal reflector. Other metrology applications using the diode laser sensor is discussed.
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