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A Proof-Of-Principle Echo-Enabled Harmonic Generation Experiment at SLAC

Description: In this paper we describe the technical design of an ongoing proof-of-principle echo-enabled harmonic generation (EEHG) experiment at the Next Linear Collider Test Accelerator (NLCTA) at SLAC.We present the design considerations and the technical details of the experiment. Recently a new method, entitled echo-enabled harmonic generation, was proposed for generation of high harmonics using the beam echo effect. In an EEHG free electron laser (FEL), an electron beam is energy modulated in a modul… more
Date: May 20, 2011
Creator: Dunning, Michael; Colby, Eric; Ding, Yuantao; Frederico, Joel; Gilevich, Sasha; Hast, Carsten et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evidence of High Harmonics from Echo-Enabled Harmonic Generation for Seeding X-ray Free Electron Lasers

Description: Echo-enabled harmonic generation free electron lasers hold great promise for the generation of fully coherent radiation in x-ray wavelengths. Here we report the first evidence of high harmonics from the echo-enabled harmonic generation technique in the realistic scenario where the laser energy modulation is comparable to the beam slice energy spread. In this experiment, coherent radiation at the seventh harmonic of the second seed laser is generated when the energy modulation amplitude is about… more
Date: November 20, 2011
Creator: Xiang, D.; Colby, E.; Dunning, M.; Gilevich, S.; Hast, C.; Jobe, K. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Study of an HHG-Seeded Free-Electron Laser for the LBNL Next Generation Light Source

Description: The Next Generation Light Source (NGLS) is a high repetition rate free-electron laser facility proposed by Lawrence Berkeley National Laboratory (LBNL). The proposed facility will provide multiple FEL lines with varying spectral characteristics to satisfy a broad soft X-ray physics programme. At this stage of the project a number of FEL technologies and concepts are being investigated for possible implementation on the facility. In this report we consider a free-electron laser seeded by a Highe… more
Date: October 20, 2010
Creator: Thompson, Neil
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analytic model of bunched beams for harmonic generation in thelow-gain free electron laser regime

Description: One scheme for harmonic generation employs free electron lasers (FELs) with two undulators: the first uses a seed laser to modulate the energy of the electron beam; following a dispersive element which acts to bunch the beam, the second undulator radiates at a higher harmonic. These processes are currently evaluated using extensive calculations or simulation codes which can be slow to evaluate and difficult to set up. We describe a simple algorithm to predict the output of a harmonic generation… more
Date: February 20, 2006
Creator: Penn, G.; Reinsch, M. & Wurtele, J.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Range-Gated LADAR Coherent Imaging Using Parametric Up-Conversion of IR and NIR Light for Imaging with a Visible-Range Fast-Shuttered Intensified Digital CCD Camera

Description: Research is presented on infrared (IR) and near infrared (NIR) sensitive sensor technologies for use in a high speed shuttered/intensified digital video camera system for range-gated imaging at ''eye-safe'' wavelengths in the region of 1.5 microns. The study is based upon nonlinear crystals used for second harmonic generation (SHG) in optical parametric oscillators (OPOS) for conversion of NIR and IR laser light to visible range light for detection with generic S-20 photocathodes. The intensifi… more
Date: December 20, 2000
Creator: Yates, George J.; Mcdonald, Thomas E., Jr.; Bliss, David E.; Cameron, Stewart M. & Zutavern, Fred J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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