Recycling pump-beam method and system for a high-power...

Details Recycling pump-beam method and system for a high-power... Recycling pump-beam method and system for a high-power...

2011-08-09

2011-08-09

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular beam control device

Nonlinear device

C372S022000

Reexamination Certificate

active

07995628

ABSTRACT:
A method and a system are implemented in the fabrication of a portable high power terahertz beam source that can produce a tunable, high power terahertz beam over the frequency from 0.1 THz to 2.5 THz. The terahertz source employs a recycling pump beam method and a beam quality control device. The beam quality control device may or may not be required for a high power terahertz beam generation. In exemplary embodiments, a lithium niobate (LiNbO3) crystal or a lithium niobate crystal doped with 5% magnesium oxide (LiNbO3:MgO) can be used. Other nonlinear optical crystals, including GaSe can be used in place of the LiNbO3crystal. Through proper alignment of a pump beam, along with recycling a pump beam, high conversion efficiency is achieved, and a high output power beam is produced at terahertz frequencies.

REFERENCES:
Wu, Dong Ho, et al., Electro-optically tunable compact terahertz source (slides), American Physical Society, Mar. 15, 2006, pp. 1-18.
Nd: YAG laser, Wikipedia the free encyclopedia, Internet [Accessed Jan. 18, 2010], pp. 1-5.
Garzarella, Anthony et al. Responsivity optimizatin and stabilizatin in electro-optic field sensors, Applied Optics, Sep. 10, 2007, pp. 6636-6640, vol. 46, No. 26, Optical Society of America, USA.

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