RADIATION PULSE GENERATION

A radiation pulse generating assembiy comprises a radiation generator (1) such as a laser for generating pulses of radiation having pulse widths in the order of pico seconds. The pulses from generator (1) are coupled into an optical fibre (2) which causes the pulses to undergo Raman scattering to ge...

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Bibliographische Detailangaben
Hauptverfasser:	ANDERSON STEVENS LEONIDAS GOMES, JAMES ROY TAYLOR, ARTHUR DA SILVA GOUVEIA-NETO
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A radiation pulse generating assembiy comprises a radiation generator (1) such as a laser for generating pulses of radiation having pulse widths in the order of pico seconds. The pulses from generator (1) are coupled into an optical fibre (2) which causes the pulses to undergo Raman scattering to generate reduced width pulses with wavelengths lying within a Raman spectrum and having widths in the order of femto seconds. A first filter (3) filters out the initial pump wavelength while a second filter (4) downstream of the first filter (3) is tunable to select reduced width pulses within a desired wavelength band.