Characterization of a high-gain harmonic-generation free-electron laser at saturation.
نویسندگان
چکیده
We report on an experimental investigation characterizing the output of a high-gain harmonic-generation (HGHG) free-electron laser (FEL) at saturation. A seed CO2 laser at a wavelength of 10.6 microm was used to generate amplified FEL output at 5.3 microm. Measurement of the frequency spectrum, pulse duration, and correlation length of the 5.3 microm output verified that the light is longitudinally coherent. Investigation of the electron energy distribution and output harmonic energies provides evidence for saturated HGHG FEL operation.
منابع مشابه
Analysis of the first high-gain harmonic-generation free-electron laser at saturation
We report results from characterization of the output of a high-gain harmonic-generation (HGHG) free-electron laser (FEL). A CO2 seed laser at a wavelength of 10.6 μm is amplified and frequencydoubled in the FEL to produce 5.3-μm output. The wavelength spectrum, pulse duration, and correlation length of the output verify that the light is longitudinally coherent. Comparisons of the measured ele...
متن کاملHigh-gain harmonic-generation free-electron laser seeded by harmonics generated in gas.
The injection of a seed in a free-electron laser (FEL) amplifier reduces the saturation length and improves the longitudinal coherence. A cascaded FEL, operating in the high-gain harmonic-generation regime, allows us to extend the beneficial effects of the seed to shorter wavelengths. We report on the first operation of a high-gain harmonic-generation free-electron laser, seeded with harmonics ...
متن کاملExperimental study of a high-gain harmonic-generation free-electron laser in the ultraviolet
050701-1 Saturation of a high-gain harmonic-generation free-electron laser (HGHG-FEL) at 266 nm has been accomplished at the Brookhaven National Laboratory/Deep Ultra Violet Free Electron Laser Facility (BNL/DUV-FEL) by seeding with an 800 nm Ti:sapphire laser. We describe the diagnostics used to characterize the electron beam and the FEL output. Analytic and simulation calculations of the HGHG...
متن کاملHigh-gain harmonic-generation free-electron laser
A high-gain harmonic-generation free-electron laser is demonstrated. Our approach uses a laser-seeded free-electron laser to produce amplified, longitudinally coherent, Fourier transform-limited output at a harmonic of the seed laser. A seed carbon dioxide laser at a wavelength of 10.6 micrometers produced saturated, amplified free-electron laser output at the second-harmonic wavelength, 5.3 mi...
متن کاملGeneration of GW - level , sub - Angstrom Radiation in the LCLS using a Second - Harmonic Radiator ∗
Electron beams are strongly microbunched near the high-gain free-electron laser (FEL) saturation with a rich harmonic content in the beam current. While the coherent harmonic emission is possible in a planar undulator, the thirdharmonic radiation typically dominates with about 1% of the fundamental power at saturation. In this paper, we discuss the second-harmonic radiation in the Linac Coheren...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review letters
دوره 86 26 Pt 1 شماره
صفحات -
تاریخ انتشار 2001