Example image of eyePlorer eyePlorer map for 'Active laser medium': Gain Laser Laser pumping Stimulated emission Argon Carbon dioxide Carbon monoxide Chromium Crystal Erbium Gallium nitride Gallium(III) arsenide Gas Glass Helium Indium gallium arsenide Ion Neodymium Neon Nitrogen Rare earth element Sapphire Semiconductor Titanium Transition metal Ytterbium Yttrium aluminium garnet Yttrium orthovanadate Population inversion Electric glow discharge Gas-discharge lamp Laser diode Cathode ray Chemical reaction Nuclear fission Boltzmann distribution Metastability Amplification Oscillation Solid-state laser Absorption (electromagnetic radiation) Cross section (physics) Emission spectrum Derivative (disambiguation) Quasi-continuous function All gas-phase iodine laser Amplified spontaneous emission Copper vapor laser Diode-pumped solid-state laser Disk laser
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