PARAMETRIC TERAHERTZ RADIATION GENERATION WITH LATERAL BEAM COUPLING

• Main Authors: DUNN, MALCOLM H, TERRY, JONATHAN A. C, RAE, CAMERON F
• Format: Patent
• Language: English; French
• Published: 02.02.2006
• Subjects: 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; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

An optical parametric device, for example an optical parametric generator or amplifier or oscillator, comprising a non-linear material that is operable to generate a signal and an idler wave in response to being stimulated with a pump wave, wherein the pump wave source and the non-linear medium are provided in the same optical cavity and the non-linear medium is such that the pump, idler and signal waves are non-collinear. Alternatively, the non-linear medium is provided in an optical cavity that resonates the pump wave, and the pump wave and the generated idler and signal waves are non-collinear.