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Více informací o knize Controlling Fringe Sensitivity of Electro-Optic Holography Systems Using Laser Diode Current Modulation

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Anotace knihy

Electro-Optic Holography (EOH) is a non-intrusive, laser-based, displacement measurement technique capable of static and dynamic displacement measurements. EOH is an optical interference technique in which fringe patterns that represent displacement contour maps are generated. At excessively large displacements the fringe density may be so great that individual fringes are not resolvable using typical EOH techniques. This thesis focuses on the development and implementation of a method for controlling the sensitivity of the EOH system. This method is known as Frequency Translated Electro-Optic Holography (FTEOH). It was determined that by modulating the current source of the laser diode at integer multiples of the object vibration, the fringe pattern is governed by higher order Bessel function of the first kind and the number of fringes that represent a given displacement can be controlled. The reduction of fringes is theoretically unlimited but physically limited by the frequency bandwidth of the signal generator, providing modulation to the laser diode. Although this research technique has been verified theoretically and experimentally in this thesis, due to the current laser diode capabilities it is a tedious and time consuming process to acquire data using the FTEOH technique.

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Zařazení knihy Knihy v angličtině Society & social sciences Education

• Plný název: Controlling Fringe Sensitivity of Electro-Optic Holography Systems Using Laser Diode Current Modulation
• Autor: Shannon J Bybee
• Jazyk: Angličtina
• Vazba: Brožovaná
• Počet stran: 152
• EAN: 9781288911059
• ISBN: 9781288911059
• ID: 08287033
• Nakladatelství: Biblioscholar
• Hmotnost: 286 g
• Rozměry: 246 × 189 × 8 mm
• Datum vydání: 12. March 2013

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