PPT-X-rays & LASERs

Section 317 Physics 1161 Lecture 24 Photons with energy in approx range 100eV to 100000eV This large energy means they go right through you except for your bones What are the wavelengths. , . G. Yu. Kryuchkyan*, . A. Ipp, J. Evers. . and C. H. Keitel. Max-Planck-Institut für Kernphysik, Heidelberg, Germany. *Yerevan State University, Yerevan , Armenia. "PW Lasers at Hard X-ray Sources" Dresden-Rossendorf, 7 Sep 2011. Wavelength the size of an atom. Frequencies above UV. Uses of X-rays. Used in airports to examine luggage for the presence of dangerous weapons or bombs or for illegal transit of goods. . used to detect structural deficits or cracks in metal objects such as bridges and aircraft that are likely to be missed by the human eye. Based on Dissipative Processes. F. W. Wise. Department of Applied Physics. Cornell University. Andy Chong. Will Renninger. Khanh Kieu. Simon Lefrancois. Hannah Liu. Brandon Bale. Edwin Ding. Nathan Kutz. Smaller than a bird, . . . as . fast as . light, . . . bright . as the sun. What is a laser? . The acronym is also the definition - . L. ight . A. mplification by . S. timulated . E. mission of . The tunable laser could be set to any desired wavelength either in the factory or in the field by a software command.. The performance parameters are:. Power. Spurious mode suppression. Wavelength stability. point the brighter the point. The more lights you turn on the brighter the reflected light from objects in the room. See rays at right. Intensity proportional to |E|. 2. Light. source 2. Light. source 1. or . color, in a given spectral range. .. As such, . these . quantum devices have found numerous applications in many diverse fields. .. In particular, tunable lasers have played a crucial and sustained role in advancements of fundamental physics and science. stemler. , Andy . Barrus. , Sean . Osinski. Overview. Definition of laser and operation. Quantitative description of laser. Various types of lasers and applications.. Laser—Light Amplification by Stimulated Emission of Radiation. He-Ne Laser. Laser Types. According to the . active material. : . solid-state, liquid, gas, . excimer. or semiconductor lasers. .. Gas: . HeNe. laser, . excimer. lasers, CO. 2. lasers. Liquid:. Bianca . Cilento. What is a laser?. A laser is a device that emits light through the process of stimulated emission. LASER is actually an acronym for Light Amplification by the Stimulated Emission of Radiation. . the active medium is glass denatured by Neodymium ions(Nd +3) (active ions) with doping rate up to (6%). The color of the crystal is purple (8). dimensions of the crystal are from a few microns to (2 cm) length and the diameter (6-10 m). The Pumping using the flash lamp). with an efficiency not exceeding (1.5%) or using a semiconductor laser with an efficiency of up to (70%). It works with a system of quadrupole levels and it dose need good cooling. science and innovation . xfel.ac.uk. In the last decade XFELs have had an impressive scientific impact, but there is clearly scope to do much, much more. . Taking a long view we looked at what kind of science we will do with an advanced XFEL operating from mid 2030’s. Extrapolating current technology advances to frame what will be possible.. The X-ray photon is a member of the electromagnetic family that includes . light. of all types, . radio waves. , . radar. and . television signals. , and . gamma rays. . Like many important scientific breakthroughs, the discovery of . X Rays. Are electromagnetic radiations having wavelength of order of 1. Are highly energetic radiations which are emitted when energetic electrons are made to incident on a metallic target.. Were discovered by German Physicist W.C. Roentgen in1895..