BYU

Abstract by Charles Bahr

Personal Infomation


Presenter's Name

Charles Bahr

Degree Level

Undergraduate

Co-Authors

Isaac Tangen
Zac Zaccardi
Natalie Green
Larry Heki
Erika Jackson
Emmalee McMurray
Gabriel Valdivia
Brittan Hunter

Abstract Infomation


Department

Chemistry and Biochemistry

Faculty Advisor

David Michaelis
Jeremy Johnson

Title

Improving Terahertz generation through layered optical structures

Abstract

Terahertz (THz) radiation is light with wavelengths ranging from 3 mm to 30 μm. THz has useful applications including chemical recognition, biomedical imaging, security, developing high-speed electronic devices, and even quality control in food processing. Creating THz radiation typically involves the conversion of short-pulsed infrared light into THz pulses at lower frequencies, a conversion most effectively accomplished by using organic crystals with nonlinear optical properties for infrared to THz conversion. While it is often advantageous to use these crystals over other THz generating methods, their setbacks include high refractive indices resulting in relfective losses, poor phase matching properties leading to absorbances, and high susceptibility to thermal damage from intense laser light. Our central hypothesis is that by using a variety of layered structures designed in our lab comprised of organic THz crystals in tandem with other specialized optical materials, we can achieve repeatable methods to overcome these three setbacks and improve overall THz crystal performance to produce stronger and broader THz spectra for practical use.