Semiconductor Lasers

Semiconductor Lasers: Semiconductor Lasers was discovered in 1962 that a gallium arsenide diode, such as the one shown in Figure 12-41, is capable of producing laser action. This occurs when the diode is forward-biased, so that effective dc pumping is needed (a very convenient state, of affairs). Depending on its precise chemical composition, the GaAs […]

Pulsed Ruby Laser

Pulsed Ruby Laser: The Pulsed Ruby Laser is similar to the ruby cavity maser, to some extent, in that stimulation is applied to raise the chromium atoms to a higher energy level to secure a population inversion once again. However, this time pumping is With light, rather than with microwave, energy. Also, no magnetic field […]

Ruby Maser

Ruby Maser: As was know ferrites of certain materials have atomic systems that can be made to resonate magnetically at frequencies dependent on the atomic structure of the material and the strength of the applied magnetic field. When such a resonance is stimulated by the application of a signal at that frequency, absorption will take […]