نوع فایل power point قابل ویرایش 27 اسلاید قسمتی از اسلایدها The possible energies which electrons in the atom can have is depicted in an energy level diagram. In 1958, Charles Townes and Arthur Schawlow theorized about a visible laser, an invention that would use infrared and/or visible spectrum light. Light Amplification by Stimulated Emission of Radiation- (LASER). Properties of Lasers Produce monochromatic light of extremely high intensity. Condition for the laser operation If n1 > n2 radiation is mostly absorbed spontaneous radiation dominates. if n2 >> n1 - population inversion most atoms occupy level E2, weak absorption stimulated emission prevails light is amplified فهرست مطالب و اسلایدها Energy level diagram The operation of the Laser The operation of the Laser The Uncertainty Principle Quantum Mechanics The Uncert ...
