Laser pulse slicer and dual wavelength converter for chemical sensing

Patent 6516008 Issued on February 4, 2003. Estimated Expiration Date:

August 9, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventor

Cohn, David B.

Assignee

Raytheon Company

Application

No. 634216 filed on 08/09/2000

US Classes:

372/22, Frequency multiplying (e.g., harmonic generator)359/28, Having multiple object beam or diffuse object illumination372/23Producing plural wavelength output

Examiners

Primary: Ip, Paul
Assistant: Nguyen, Tan T.

Attorney, Agent or Firm

Raufer; Colin M., Alkov; Leonard A., Lenzen, Jr.; Glenn H.

International Class

H01S 003/10

Abstract

A wavelength conversion system and method. The inventive system is adapted to receive a beam of input energy having a first spiked portion with a first wavelength and a first spatial and/or temporal intensity profile and a second tail portion with the first wavelength and a second spatial and/or temporal intensity profile. The inventive system includes an electro-optic switch (14) and first polarizer (16) for directing the first portion of the input beam along a first processing path (18) and a second portion thereof along a second processing path (20). A first SHG/OPO arrangement (22, 24) is disposed in the first path (18) for shifting the wavelength of the first portion of the input energy from the first wavelength to a second wavelength. The first arrangement is optimized for the first spatial and/or temporal intensity profile of the first portion of the energy. A second SHG/OPO arrangement (30, 32) is disposed in the second path for shifting the wavelength of the second portion of the input energy from the first wavelength to the second wavelength. The second arrangement is optimized for the second spatial and/or temporal intensity profile of the second portion of the energy.

Other References

Henderson, A.J. et al., "CTUR2 Efficient Line Narrowing of an Excimer-Pumped B-Barium Borate Optical Parametric Oscillator", Proceedings of the Conference on Lasers and Electro Optics (CLEO), Anaheim, May 10-15, 1992, NY, IEEE, US, vol. Conf. 12, May 10, 1992, pp. 198-199, XP000351474, ISBN: 1-55752-237-