Skip to main content
Open Access Publications from the University of California

THz QCLs for heterodyne receivers and wavelength modulation spectroscopy

  • Author(s): Lee, AWM
  • Kao, TY
  • Zimmerman, IA
  • Cole, WTS
  • Thurston, R
  • Saykally, RJ
  • Han, N
  • Hu, Q
  • et al.

© 2016 SPIE. Milliwatt average power terahertz quantum cascade lasers (THz-QCLs, 2 THz to 5 THz) have been developed for spectroscopy and as local oscillators for heterodyne receivers. Novel DFB THz-QCLs have been fabricated and show single-mode operation. The narrow line widths of <10 MHz and stark shift tuning of of 6 GHz, allows for wavelength modulation spectroscopy of low pressure gasses in the unexplored THz frequency band. The same devices also act as local-oscillators for heterodyne receivers for remote-sensing and astronomy. Lastly we report on improved tunable DFB devices for use in spectroscopy.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View