Title

Optimizing Photon Yield and Angular Frequency Range Through the Use of RF Laser Chirping

Presenting Author Name/s

Aaron Brown

Faculty Advisor

Dr. Balsa Terzic

Presentation Type

Poster

Disciplines

Plasma and Beam Physics

Description/Abstract

Inverse Compton Scattering occurs when an electron collides with an incident photon and transfers some of its kinetic energy to said photon. For a while now this has been an effective method of generating photons of higher angular momentum for use in many areas of physics, but it is not without its drawbacks like ponderomotive broadening. It has been shown that laser chirping is an effective method of mitigating the effects of ponderomotive broadening in Inverse Compton Scattering sources which causes the scattered photons to cover a range of angular frequencies, many of which are not wanted. Producing photons of a desired angular frequency in large numbers is a problem faced in a number of fields of physics. This paper will show that our chirping prescription can minimize the spectral peak width (limit the range of photon frequencies) and maximize the spectral peak height (increase the number of photons of the desired angular frequency). Additionally, this paper will demonstrate how this chirping prescription can provide marked improvement for real world applications where increasing laser intensity is cost prohibitive and ineffective.

Session Title

Poster Session

Location

Learning Commons, Northwest Atrium

Start Date

2-2-2019 8:00 AM

End Date

2-2-2019 12:30 PM

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Feb 2nd, 8:00 AM Feb 2nd, 12:30 PM

Optimizing Photon Yield and Angular Frequency Range Through the Use of RF Laser Chirping

Learning Commons, Northwest Atrium

Inverse Compton Scattering occurs when an electron collides with an incident photon and transfers some of its kinetic energy to said photon. For a while now this has been an effective method of generating photons of higher angular momentum for use in many areas of physics, but it is not without its drawbacks like ponderomotive broadening. It has been shown that laser chirping is an effective method of mitigating the effects of ponderomotive broadening in Inverse Compton Scattering sources which causes the scattered photons to cover a range of angular frequencies, many of which are not wanted. Producing photons of a desired angular frequency in large numbers is a problem faced in a number of fields of physics. This paper will show that our chirping prescription can minimize the spectral peak width (limit the range of photon frequencies) and maximize the spectral peak height (increase the number of photons of the desired angular frequency). Additionally, this paper will demonstrate how this chirping prescription can provide marked improvement for real world applications where increasing laser intensity is cost prohibitive and ineffective.