Second-harmonic nanoprobes
نویسندگان
چکیده
منابع مشابه
Second harmonic generating (SHG) nanoprobes for in vivo imaging.
Fluorescence microscopy has profoundly changed cell and molecular biology studies by permitting tagged gene products to be followed as they function and interact. The ability of a fluorescent dye to absorb and emit light of different wavelengths allows it to generate startling contrast that, in the best cases, can permit single molecule detection and tracking. However, in many experimental sett...
متن کاملSecond-harmonic generation
The goal of this experiment in nonlinear optics is to study the conversion of a (very small) fraction of laser light from its original wavelength of 980 nm (i.e. invisible to the naked eye) to its second-harmonic at a wavelength of 490 nm. This conversion takes place by mild focussing of an intense laser beam in a nonlinear birefringent crystal of BBO (= β BaBO4). You will study the physical pr...
متن کاملThe Fundamental and Second Harmonic
A formalism is developed for determining the possibility of operation of a gyrotron at both the fundamental, w = wc, in a TE mode and at the second harmonic, w' = 2wc, in a TE , mode. This formalism is then applied to two physical problems. First, the conditions are derived for conversion of a gyrotron from operation at w = w to operation at w' 2w . Such a conversion c c is shown to be most pra...
متن کاملInterferometric second harmonic generation microscopy.
We describe a novel second harmonic generation (SHG) microscope that employs heterodyne detection by interfering the epi directed SHG from a sample with SHG from a reference crystal. In addition, the microscope provides complementary reflectance information based on optical coherence microscopy (OCM). The instrument features dual balanced detection to minimize the effect of source fluctuations,...
متن کاملX-ray second harmonic generation.
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 import...
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: Nature Photonics
سال: 2010
ISSN: 1749-4885,1749-4893
DOI: 10.1038/nphoton.2010.291