TY - JOUR
T1 - X-ray second harmonic generation
AU - Shwartz, S.
AU - Fuchs, M.
AU - Hastings, J. B.
AU - Inubushi, Y.
AU - Ishikawa, T.
AU - Katayama, T.
AU - Reis, D. A.
AU - Sato, T.
AU - Tono, K.
AU - Yabashi, M.
AU - Yudovich, S.
AU - Harris, S. E.
PY - 2014/4/22
Y1 - 2014/4/22
N2 - We report clear experimental evidence for second harmonic generation at hard x-ray wavelengths. Using a 1.7 Å pumping beam generated by a free electron laser, we observe second harmonic generation in diamond. The generated second harmonic is of order 10 times the background radiation, scales quadratically with pump pulse energy, and is generated over a narrow phase-matching condition. Of importance for future experiments, our results indicate that it is possible to observe nonlinear x-ray processes in crystals at pump intensities exceeding 1016W/cm2.
AB - We report clear experimental evidence for second harmonic generation at hard x-ray wavelengths. Using a 1.7 Å pumping beam generated by a free electron laser, we observe second harmonic generation in diamond. The generated second harmonic is of order 10 times the background radiation, scales quadratically with pump pulse energy, and is generated over a narrow phase-matching condition. Of importance for future experiments, our results indicate that it is possible to observe nonlinear x-ray processes in crystals at pump intensities exceeding 1016W/cm2.
UR - http://www.scopus.com/inward/record.url?scp=84899104246&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.112.163901
DO - 10.1103/PhysRevLett.112.163901
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
C2 - 24815649
AN - SCOPUS:84899104246
SN - 0031-9007
VL - 112
JO - Physical Review Letters
JF - Physical Review Letters
IS - 16
M1 - 163901
ER -