Group- and phase-velocity-mismatch fringes in triple sum-frequency spectroscopy
نویسندگان
چکیده
منابع مشابه
Frequency/velocity Mismatch; a Fundamental Abnormality
1 PARKINSONIAN GAIT 2 3 4 5 6 7 Catherine Cho, Mikhail Kunin, Koji Kudo, Yasuhiro Osaki, C Warren Olanow, 8 Bernard Cohen, and Theodore Raphan 2, 1 9 10 11 12 13 14 From the Dept. of Neurology, Mount Sinai School of Medicine, New York, New York, 15 10029, USA, Dept. of Computer and Information Science, City University of New York 16 (Brooklyn College and Graduate Center), Brooklyn, New York 112...
متن کاملFrequency comb velocity-modulation spectroscopy.
We have demonstrated a new technique that provides massively parallel comb spectroscopy sensitive specifically to ions through the combination of cavity-enhanced direct frequency comb spectroscopy with velocity-modulation spectroscopy. Using this novel system, we have measured electronic transitions of HfF⁺ and achieved a fractional absorption sensitivity of 3×10⁻⁷ recorded over 1500 simultaneo...
متن کاملExtended phase matching of second-harmonic generation in periodically-poled KTiOPO4 with zero group-velocity mismatch
Under extended phase-matching conditions, the first frequency-derivative of the phase-matching function is zero and the phase-matching bandwidth is greatly increased. We made extensive three-wave mixing measurements to identify the operating point for extended phase matching, thus permitting us to observe a type-II phase-matching bandwidth of 100 nm centered at the fundamental wavelength of 158...
متن کاملTheoretical Sum Frequency Generation Spectroscopy of Peptides
Vibrational sum frequency generation (SFG) has become a very promising technique for the study of proteins at interfaces, and it has been applied to important systems such as anti-microbial peptides, ion channel proteins, and human islet amyloid polypeptide. Moreover, so-called "chiral" SFG techniques, which rely on polarization combinations that generate strong signals primarily for chiral mol...
متن کاملFrequency-velocity mismatch: a fundamental abnormality in parkinsonian gait.
Gait dysfunction and falling are major sources of disability for patients with advanced Parkinson's disease (PD). It is presently thought that the fundamental defect is an inability to generate normal stride length. Our data suggest, however, that the basic problem in PD gait is an impaired ability to match step frequency to walking velocity. In this study, foot movements of PD and normal subje...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2017
ISSN: 2469-9926,2469-9934
DOI: 10.1103/physreva.96.063835