Backward terahertz generation in periodically poled lithium niobate crystal via difference frequency generation
- Type
- Article
- Citation
- Japanese Journal of Applied Physics, v.46, no.4A, pp.1501 - 1504
- Issued Date
- 2007-04
- Abstract
- We have investigated the terahertz radiation generated by femtosecond laser pulses in a periodically poled lithium niobate crystal. Two different types of terahertz radiation, forward and backward, Could be generated in quasi-phase-matching structures. The generation of these two different types of radiation is due to difference frequency generation under the quasi-phase matching condition. A broadband femtosecond optical pulse contributes to wave mixing, which occurs between two components of an ultrashort laser pulse and a terahertz pulse, in a quasi-phase-matching crystal. We observed a backward terahertz radiation at approximately 1.3 THz and the frequencies of terahertz radiations are easily controlled by varying the domain structures.
- Publisher
- INST PURE APPLIED PHYSICS
- ISSN
- 0021-4922
- Appears in Collections:
- Department of Physics and Photon Science > 1. Journal Articles
Research Institutes > 1. Journal Articles
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