Transcription of Laser Basics - USPAS
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Laser Basics - USPAS
B Sheehy US Particle Accel School Jan 2013 1 Laser Basics What is a Laser ? Stimulated Emission, Population Inversion, Cavities Some examples Coherent sources in general Overview of Laser Applications in Accelerator Physics Some important Laser Configurations for AP Ti:Sapphire lasers Chirped Pulse Amplification Nonlinear frequency synthesis Fiber Lasers US Particle Accelerator School Jan 2012 2 What is a Laser ? Definition: Light Amplification by Stimulated Emission V1adis1av, Wikipedia In principle, the only necessary and sufficient condition to call something a Laser is that the gain mechanism be stimulated emission: the fact that the transition amplitude for emission into a field mode is linear in the field strength. an obvious instability similar to a nuclear fission chain reaction (but coherent) requires a population inversion B Sheehy US Particle Accel School Jan 2013 3 In principle, the only necessary and sufficient condition to call something a Laser is that the gain mechanism be stimulated emission: the fact that the transition amplitude for emission into a field mode is linear in the field strength.
laser is that the gain mechanism be stimulated emission: the fact that the transition amplitude for emission into a field mode is linear in the field strength. • an obvious instability similar to a nuclear fission chain reaction (but
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