Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
SPECIAL ANNOUNCEMENT
2016 Photonics Buyers' Guide Clearance! – Use Coupon Code FC16 to save 60%!
share
Email Facebook Twitter Google+ LinkedIn Comments

Crystal Yields Narrowband T-rays

Photonics Spectra
Nov 2000
A team from the University of Michigan and IMRA America, both of Ann Arbor, has generated narrowband coherent terahertz radiation, or T-rays, with periodically poled LiNbO3 (PPLN). T-rays have potential applications in spectroscopy, imaging and sensing.

The researchers, who published their results in the Aug. 28 issue of Applied Physics Letters, illuminated 1.2- and 7.2-mm PPLN crystals at 18 to 298 K with 200-fs, 800-nm pulses from a Ti:sapphire regenerative amplifier. They measured bandwidth as low as 18 GHz with a spectral center of 1.8 THz and found little broadening to 120 K. Output power decreased with increasing temperature from a maximum observed power of 5 µW.


Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2016 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!