[특허]Method of and apparatus for generating intracavity double raman shifted laser pulses

Method of and apparatus for generating intracavity double raman shifted laser pulses 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01S-003/30
출원번호	US-0547809 (1995-10-25)
발명자 / 주소	MacPherson David C. (Conifer CO)
출원인 / 주소	Ophir Corporation (Littleton CO 02)
인용정보	피인용 횟수 : 71 인용 특허 : 0

초록 ▼

Apparatus performs a method of generating one output laser pulses in a range of 2 to 5 microns using an intracavity feature. When a plurality of the output laser pulses are generated, a first output pulse may have any selected wavelength within the range and a second output pulse is temporally closely spaced relative to the first output pulse and may have a chosen wavelength differing from the selected wavelength. A pump laser cavity is provided with a tunable rod and an intracavity Raman device (in the pump cavity) to shift the wavelength of initial pump laser pulses. The intracavity Raman device generates radiation at first and second Stokes wavelengths, and the pulses at each wavelength are separated and are in separate paths for permitting separate operation thereon. The Raman device in the pump cavity increases the pump intensity inside the Raman cell and gives a much longer effective interaction length between the pump laser beam and the Raman medium. A first Stokes cavity for the first Raman shift overlaps the pump cavity such that the intensity in the first Stokes cavity is increased. A second Stokes cavity overlaps the pump cavity and is provided with one highly reflecting end mirror and one partially reflecting end mirror which serves as an output coupler for the output pulse which is in the wavelength range from 2 to 5 microns.

대표청구항 ▼

In an output laser beam generator apparatus, said apparatus comprising a tunable pump laser cavity which operates to generate an initial laser beam, and a Raman device; said Raman device being responsive to said initial laser beam and double Raman shifting the wavelength of said initial laser beam to generate first and second beams at respective first and second Stokes wavelengths, said second beam being said output laser beam, the improvement comprising: said Raman device being located inside said tunable laser cavity; a first Stokes cavity comprising said Raman device and a first optical system effective on said first beam at said first Stokes wavelength to return said first beam to said Raman device along a first path; and a second Stokes cavity comprising said Raman device and said optical system effective on said second beam at said second Stokes wavelength to return said second beam to said Raman device along a second path.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Method of and apparatus for generating intracavity double raman shifted laser pulses 원문보기

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연합인증

Method of and apparatus for generating intracavity double raman shifted laser pulses 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (71)

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