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Sub-femtosecond Bunch Length Diagnostic

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-12ER90260
Agency Tracking Number: 98777
Amount: $999,536.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: 09b
Solicitation Number: DE-FOA-0000782
Solicitation Year: 2013
Award Year: 2013
Award Start Date (Proposal Award Date): 2013-04-09
Award End Date (Contract End Date): N/A
Small Business Information
1717 Stewart Street
Santa Monica, CA -
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: Mr.
Phone: (310) 822-5845
Research Institution

The determination of the longitudinal profile 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 measurement of ultrashort beams in the time domain is accomplished by encoding the temporal profile information on a transverse angular modulation of the beam. This modulation is then observable on a distant screen using readily available imaging tools. In Phase I, an analytical treatment complemented by simulations was developed, a proof of principle experiment was designed, and experimental measurements of key components were demonstrated including the generation of a higher-order laser mode in the far-infrared. In Phase II we will develop the key subcomponents, including the laser modulator, laser mode driver, and observation screen. We will integrate these components into a field ready prototype and execute the proof of principle experiment to demonstrate sub-femtosecond temporal resolution on a high-brightness electron beam. 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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