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Around 1980, Michael W. Berns, a professor of biology at the University of California, Irvine, founded an institute focusing on the then-new technology of lasers.After receiving a National Institutes of Health biotechnology grant, [3]: 328–331 he established a laboratory for laser microscopy, the Laser Microbeam Program (LAMP). [4]
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The most basic optical tweezer setup will likely include the following components: a laser (usually Nd:YAG), a beam expander, some optics used to steer the beam location in the sample plane, a microscope objective and condenser to create the trap in the sample plane, a position detector (e.g. quadrant photodiode) to measure beam displacements ...
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Rox Anderson proposed the medical application of the free-electron laser in melting fats without harming the overlying skin. [42] At infrared wavelengths , water in tissue was heated by the laser, but at wavelengths corresponding to 915, 1210 and 1720 nm , subsurface lipids were differentially heated more strongly than water.
This frequency shifted beam then is directed to the target. The motion of the target adds a Doppler shift to the beam given by f d = 2*v(t)*cos(α)/λ, where v(t) is the velocity of the target as a function of time, α is the angle between the laser beam and the velocity vector, and λ is the wavelength of the light.
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In medicine, proton therapy, or proton radiotherapy, is a type of particle therapy that uses a beam of protons to irradiate diseased tissue, most often to treat cancer.The chief advantage of proton therapy over other types of external beam radiotherapy is that the dose of protons is deposited over a narrow range of depth; hence in minimal entry, exit, or scattered radiation dose to healthy ...