CHARACTERISATION OF A RADIATION PULSE BY TIME-RESOLVED OPTICAL WINDOWING

6533b860fe1ef96bd12c35ed

RESEARCH PRODUCT

CHARACTERISATION OF A RADIATION PULSE BY TIME-RESOLVED OPTICAL WINDOWING

Pierre Béjot Franck Billard Edouard Hertz

subject

[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics][PHYS] Physics [physics]

description

The invention relates to a system (10) for characterising a pulse (I) of electromagnetic radiation by time-resolved optical windowing, which comprises an device (1) for forming an interference which is suitable for superimposing four parts of the pulse. The system also comprises a matrix image sensor (3) which selectively captures an interference pattern formed by the pulse from two-photon absorptions. Said system allows the pulse shape to be obtained completely and accurately, and is particularly suitable for characterising ultrashort pulses. In various embodiments, the two-photon absorption can be produced in the matrix image sensor, or replaced by optical frequency doubling which is produced by an SHG crystal plate.

year	journal	country	edition	language
2022-01-01

https://hal.science/hal-04121021

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