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Development and application of a 100 MHz-resolution terahertz time-domain spectrometer

Holland, Daniel B. and Blake, Geoffrey A. (2013) Development and application of a 100 MHz-resolution terahertz time-domain spectrometer. In: 245th ACS National Meeting & Exposition, Abstracts of Papers, April 7-11, 2013, New Orleans, LA. http://resolver.caltech.edu/CaltechAUTHORS:20130802-092119871

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Abstract

We will report on our development and application of a terahertz (THz) time-domain spectrometer employing asynchronous optical sampling (ASOPS) between two com. Ti:Sapphire lasers operating with a repetition rate of approx. 80 MHz, and a THz frequency resoln. approaching the limit of that repetition rate. Time-domain terahertz spectrometers are often based on scanning mech. delay stages; yielding a practically feasible resoln. limit of several GHz. There are com. available THz timedomain spectrometers employing ASOPS with GHz repetition rate lasers; they achieve 1 GHz resoln. The use of our lower repetition rate lasers, while introducing tech. challenges, offers a theor. resoln. limit of approx. 80 MHz. Applications to be presented include the rotational spectrum of water as a demonstration of instrument performance, as well as spectra of pseudorotational modes in THF and long-delay THz emission measurements of coherent spin precession lifetimes of THz-pumped magnons in candidate spintronics materials.


Item Type:Conference or Workshop Item (Paper)
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Additional Information:© 2013 American Chemical Society.
Record Number:CaltechAUTHORS:20130802-092119871
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130802-092119871
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39726
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:05 Aug 2013 23:41
Last Modified:01 Jan 2016 21:49

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