Author/Authors :
Neil، نويسنده , , George R. and Benson، نويسنده , , S.V. and Biallas، نويسنده , , G. and Freund، نويسنده , , H.P. and Gubeli، نويسنده , , J. and Jordan، نويسنده , , K. and Myers، نويسنده , , S. and Shinn، نويسنده , , M.D.، نويسنده ,
Abstract :
We have produced and measured for the first time second harmonic oscillation in the infrared region by the high-average-power Jefferson Lab Infrared Free Electron Laser. The finite geometry and beam emittance allows sufficient gain for lasing to occur. We were able to lase at pulse rates up to 74.85 MHz and could produce over 4.5 W average and 40 kW peak of IR power in a 40 nm FWHM bandwidth at 2925 nm. In agreement with predictions, the source preferentially lased in a TEM01 mode. We present results of initial source performance measurements and comparisons with theory and simulation.
