Abstract
We constructed a two-directional continuous-wave (CW) terahertz (THz) wave generation system with laser diode pumping. The generation method is based on difference frequency generation (DFG) of two near-infrared (NIR) lasers by excitation of phonon polaritons in a GaP crystal. The two NIR lasers for DFG are amplified simultaneously using one ytterbium-doped fiber amplifier (FA). Efficient beam overlapping of the NIR lasers was achieved on the GaP crystal surface. This system consists of a simple optical design with a single FA. Narrow linewidth CW THz waves, which are generated in two directions, can be applied to high-resolution spectroscopy.
Original language | English |
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Pages (from-to) | 260-262 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 21 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2009 Feb 15 |
Keywords
- Continuous-wave (CW)
- Fiber amplifier (FA)
- GaP
- Phase matching
- Terahertz (THz)
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering