System and method for chirped pulse interferometry

G - Physics – 01 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01N 21/00 (2006.01) G01B 9/02 (2006.01) G01N 21/41 (2006.01)

Patent

CA 2710296

The device is based on a cross-correlator which measures the signal between a pair of oppositely chirped laser pulses. Two laser pulses, one with a positive chirp and one with a negative chirp, are mixed on a beamsplitter. The two resulting beams pass through a reference or a sample arm and are subsequently mixed on a non- lmear crystal. The signal from the interferometer is the sum frequency generation produced in that crystal. The reference arm contains a moveable delay which is used to change the relative timing of the two beams in the interferometer. The sum frequency generation in the narrow band of frequencies is the signal from the device and is measured as a function of the delay. Alternatively, a pure dispersive phase shift could be used in place of the two laser pulses.

L'invention porte sur un dispositif qui est basé sur un corrélateur croisé qui mesure le signal entre une paire d'impulsions laser comprimées de façon opposée. Deux impulsions laser, une avec une compression positive et une avec une compression négative, sont mélangées sur un diviseur de faisceau. Les deux faisceaux résultants passent à travers un bras de référence ou un bras échantillon et sont ultérieurement mélangés sur un cristal non linéaire. Le signal provenant de l'interféromètre est la génération de fréquence de somme produite dans ce cristal. Le bras de référence contient un retard mobile qui est utilisé pour changer la temporisation relative des deux faisceaux dans l'interféromètre. La génération de fréquence de somme dans la bande étroite de fréquences est le signal provenant du dispositif et est mesurée en fonction du retard. En variante, un déphasage dispersif pur pourrait être utilisé à la place des deux impulsions laser.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

System and method for chirped pulse interferometry does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for chirped pulse interferometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for chirped pulse interferometry will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1721704

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.