RESONANTLY ENHANCED FREQUENCY CONVERTER

• Main Authors: AVDOKHIN ALEXEY, ANDRUSYAK OLEKSIY
• Format: Patent
• Language: English; Korean
• Published: 24.06.2015
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DEVICES USING STIMULATED EMISSION; ELECTRICITY; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

기본 주파수의 단일모드 입력빔을 변환된 주파수의 출력빔으로 변환하는 주파수 컨버터는 공진 공동을 정의하는 복수의 이격된 광구성요소들로 구성된다. 광구성요소들은 공동에 적어도 하나의 빔웨이스트로 입력빔을 형성한다. 주파수 컨버터는 공동 내에 위치된, 결정의 중심이 빔경로를 따라 빔웨이스트로부터 이격되도록 공동의 왕복 길이보다 더 작은 레이리 범위에 따른 발산빔이거나 공동의 왕복길이보다 더 긴 레이리 범위에 따른 조준빔에 위치된 비선형 결정을 더 구비한다. A frequency converter for converting a single mode input beam at a fundamental frequency to an output beam at a converted frequency is configured with a plurality of spaced optical components defining a resonant cavity. The optical components shape the input beam with at least one beam waist in the cavity. The frequency converter further includes a non-linear crystal located within the cavity in either a divergent beam with a Rayleigh range smaller than a cavity round trip length so that a center of the crystal is spaced from the beam, waist along a beam path, or in a collimated beam with a Rayleigh range greater than the cavity round trip length