Title :
Tunable Terahertz Signals Using a Helicoidally Polarized Ceramic Microchip Laser
Author :
McKay, Aaron ; Dawes, Judith M.
Author_Institution :
Dept. of Phys., Macquarie Univ., Sydney, NSW
fDate :
4/1/2009 12:00:00 AM
Abstract :
A two-frequency microchip laser based on highly doped ceramic Nd:YAG and twisted polarization modes is presented. The frequency difference between modes was tunable continuously over a frequency range of 150 GHz, from radio frequency to terahertz frequencies. This tuning is limited by the gain bandwidth of the neodymium-doped YAG laser medium. The long-term frequency stability of the resulting narrow-linewidth beat-note signal is very good. This offers a simple, yet widely tunable terahertz source with potential for portable frequency reference applications.
Keywords :
ceramics; frequency stability; laser tuning; light polarisation; microchip lasers; neodymium; YAG:Nd; frequency stability; helicoidally polarized ceramic; microchip laser; tunable terahertz signals; twisted polarization; Ceramic lasers; Neodymium : YAG (Nd : YAG) lasers; laser stability; microwave generation; two-frequency lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2013727
