Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ki Soo Kim0
Ki Hong Yoon0
Oh Kee Kwon0
Kwang Ryong Oh0
Dong Churl Kim0
Jong Hoi Kim0
Date of Patent
August 24, 2010
Patent Application Number
12192527
Date Filed
August 15, 2008
Patent Primary Examiner
Patent abstract
Provided is a frequency-tunable terahertz light source device. The frequency-tunable terahertz light source device satisfies a Littrow diffraction condition at a wavelength and simultaneously satisfies a Littman-Metcalf diffraction condition at another wavelength using a double diffraction grating having two grating periods. Thus, oscillations simultaneously occur at the two different wavelengths, such that a terahertz wave can be stably generated by beating of the two oscillation wavelengths. In addition, the frequency-tunable terahertz light source device can readily change a frequency up to several terahertz and can be fabricated in a small size.
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