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Ultrashort, high-brightness bunch length diagnostic with sub-femtosecond resolution

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-10ER85872
Agency Tracking Number: 95698
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: 13 b
Solicitation Number: DE-FOA-0000161
Solicitation Year: 2010
Award Year: 2010
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): 2011-03-18
Small Business Information
1717 Stewart Street
Santa Monica, CA 90404
United States
DUNS: 140789137
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Gerard Andonian
 (310) 822-5845
Business Contact
 Salime Boucher
Title: Dr.
Phone: (310) 822-5845
Research Institution

The determination of the longitudinal bunch parameter of light sources requires ever-increasing precision. As novel schemes to create bunches at the level of tens of femtoseconds become more widespread, the diagnosis of these bunches with increased resolution is necessary. Currently available techniques have resolutions on the order of tens of femtoseconds, but there is no technique that surpasses the femtosecond barrier. The diagnostic proposed by RadiaBeam Technologies exploits the angular modulation imposed on the beam during its interaction with a high power laser in the presence of a magnetic field. The trajectory projection on a distant screen produces a horizontal sweep of electrons. The resolution (on the plane of laser polarization), using standard imaging techniques, is on the order of 1/200 of the laser wavelength (for CO2 laser light, this corresponds to a resolution of 150 attoseconds). An additional angular kick in the perpendicular dimension, using a novel x-band travelling wave deflecting cavity, produces an observable sweep in the vertical dimension creating an oscillating trace proportional to the bunch length. Commercial Applications and Other Benefits: The proposed structure will allow the study of beam events on the sub-femtosecond time scale. This addresses needs of modern-day and future accelerators and light sources that necessitate precise resolution of longitudinal beam parameters. The resolution of the scheme is on the order of 1/200 of the laser wavelength, which can be used in other applications, such as precision timing systems, or as an optical streak camera, or fast oscilloscope with greater than 10THz bandwidth.

* Information listed above is at the time of submission. *

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