1. High-Order Sideband Generation Jordan Grace Physics Mentor: Hunter Banks Faculty Advisor: Prof. Mark Sherwin Institute for Terahertz Science and Technology Funded by the National Science Foundation

2. Terahertz Radiation

3. Free Electron Laser Low voltage Medium voltage High voltage

4. FEL e

5. Describing a Wave Frequency Energy λ = c/f f = 1/T k = 2 π / λ E = hf v = λ f ω = 2 π f Wavelength λ = c/f

6. Physics 101 - Frequency Space

7. Frequency 1 Hz = 1 wave cycle per second 1 THz = 1 trillion wave cycles per second

8. e +- GaAs Exciton

9. Physics 102 - Energy E=hf frequency Planck Constant

10. E = hf Sample Data NIR Laser

11. Physics 103 - Wavelength Space Wavelength (meters)

12. Wavelength λ = c/f 300 GHz 30 THz 1 mm 10 μm 370 THz 810 nm THz GapNear-Infrared Laser Speed of Light Frequency

13. Camera Setup Diffraction Grating To LabVIEW Camera HSG Signal

14. LabVIEW

16. Front Panel

17. Acknowledgements The Sherwin Group Mark Sherwin – Principle Investigator Hunter Banks - Mentor Dave Enyeart – Master of the FEL

18. References THz Gap 1: http://www.nature.com/nature/journal/v417/n6885/fig_tab/417132b_ F1.html THz Gap 2: http://circe.lbl.gov/THzGap.html THz Gap 3: http://www.teraphysics.com/understanding-thz.html CMB: http://invisibles.eu/index.php?q=attached_image/4288&fid=3918 FEL: http://sherwingroup.itst.ucsb.edu/facilities.html EM Spectrum : http://www.lbl.gov/MicroWorlds/ALSTool/EMSpec/EMSpec2.html Body Scanner: Property of the Transportation Security Administration Marvin the Martian is property of Warner Brothers Reese Witherspoon’s sidebangs : Andreas Rentz / Getty Images Images Information http://www.ece.ucsb.edu/Faculty/rodwell/research_group/hi ghfreq.html http://www.teraphysics.com/understanding-thz

19. Thanks!