Line narrowing of terahertz vibrational modes for organic thin polycrystalline films within a parallel plate waveguide
Date
2006-12-19Author
Melinger, Joseph S.
Laman, N.
Harsha, S. Sree
Grischkowsky, D.
Metadata
Show full item recordAbstract
Waveguide terahertz time-domain spectroscopy is used to demonstrate the narrowing of vibrational lines for a thin polycrystalline film of 1,2-dicyanobenzene in a parallel plate metal waveguide. When compared to corresponding linewidths for 1,2-dicyanobenzene in a pellet sample at room temperature, the linewidths for the waveguide film are found to be significantly sharper. For measurements near 77 K, a dramatic line narrowing is observed for the waveguide film, yielding linewidths as much as five times sharper than found in the pellet. These effects are attributed to much smaller inhomogeneous broadening in the waveguide film and result in a more informative spectrum.
Citation
Melinger, J. S., Laman, N., Harsha, S. S., & Grischkowsky, D. (2006). Line narrowing of terahertz vibrational modes for organic thin polycrystalline films within a parallel plate waveguide. Applied Physics Letters, 89(25), Article 251110. https://doi.org/10.1063/1.2405884