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|a Ofori-Okai, Benjamin Kwasi
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|a Massachusetts Institute of Technology. Department of Chemistry
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|a Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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|a Massachusetts Institute of Technology. Research Laboratory of Electronics
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|a Ofori-Okai, Benjamin Kwasi
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|a Sivarajah, Prasahnt
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|a Huang, Wenqian
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|a Nelson, Keith Adam
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|a Sivarajah, Prasahnt
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|a Huang, Wenqian
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|a Nelson, Keith Adam
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|a THz generation using a reflective stair-step echelon
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|b Optical Society of America,
|c 2017-06-30T23:02:44Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/110409
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|a We present a novel method for THz generation in lithium niobate using a reflective stair-step echelon structure. The echelon produces a discretely tilted pulse front with less angular dispersion compared to a high groove-density grating. The THz output was characterized using both a 1-lens and 3-lens imaging system to set the tilt angle at room and cryogenic temperatures. Using broadband 800 nm pulses with a pulse energy of 0.95 mJ and a pulse duration of 70 fs (24 nm FWHM bandwidth, 39 fs transform limited width), we produced THz pulses with field strengths as high as 500 kV/cm and pulse energies as high as 3.1 μJ. The highest conversion efficiency we obtained was 0.33%. In addition, we find that the echelon is easily implemented into an experimental setup for quick alignment and optimization.
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|a Samsung (Firm) (Global Research Outreach (GRO) Program)
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|a National Science Foundation (U.S.). Graduate Research Fellowship Program
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|a Natural Sciences and Engineering Research Council of Canada (Postgraduate Scholarship)
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|a American Society for Engineering Education. National Defense Science and Engineering Graduate Fellowship
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|a en_US
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|a Article
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|t Optics Express
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