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Full set of Notes with Fill-Ins - San Jose State University

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Chem. 155 Unit 4 Page 95 <strong>of</strong> 3161.1.48 A laser is a light amplifier –Some <strong>of</strong> the above processes degrade the light in the cavity• Spontaneous Emission• AbsorptionSome <strong>of</strong> the above processes amplify the light in the cavity• Pumping• Stimulated Emissionbeam outPump201Fast DecayLasing!Two common laserconfigurations:3-state32Fast DecayPump01Lasing!Fast Decay4-state (or more)Page 95 <strong>of</strong> 316

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