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Operation of Practical Lasers
Properties of Laser Radiation
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absorption amplitude angle applications argon atoms band beam divergence CO2 laser coherence length components conduction band density detector diagram diameter diffraction discharge distance electric field electron emitted energy levels example excited fiber film flashtube focused frequency GaAs given graded-index fiber heat hence HeNe laser hole hologram holographic illustrated in Fig incident interference fringes ion laser irradiance large number laser beam laser cavity laser radiation lasing layer lens light linewidth loss material measured metal mirror mode modulation molecule object operating optical fiber oscillating phase photodetector photodiode photon plane polarization population inversion possible pulse pumping Q-switching reflected refractive index region relatively result rotating Schematic Section shown in Fig signal stimulated emission surface techniques temperature thermal tion transverse modes tube typical valence band vapor velocity vibrational wave wavefront wavelength welding YAG laser