Laser
Understand the LASER expansion, coherent nearly single-frequency output, directionality, intensity and the three functional parts of a laser.
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Laser Meaning, Beam Properties and Components
Understand the LASER expansion, coherent nearly single-frequency output, directionality, intensity and the three functional parts of a laser.
Open article →Emission, Population Inversion and Laser Action
Follow the laser mechanism from pumping and metastable storage to population inversion, stimulated emission, resonator feedback and amplified output.
Open article →Ruby and Helium-Neon Lasers
Compare the two TNPSC-named lasers through active medium, pumping method, population inversion, output wavelength and operating mode.
Open article →Laser Photon Energy, Power and Emission Rate
Use E = hf = hc/λ and photon rate P/E to connect a laser's wavelength and power with the number of photons emitted each second.
Open article →Laser Applications and Choosing the Right Beam
Connect each laser application with the property it needs: focus, coherence, wavelength selection, directionality, power or short pulses.
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