Crystal waveguide lasers, liquid epitaxy and ion-implantation.
In, 12th UK National Quantum Electronics Conference - QE12, Southampton, GB,
04 - 08 Sep 1995.
Fabricating low loss planar waveguides in crystal laser hosts can lead to very large inversion densities for relatively low pump powers due to the confinement of light to small dimensions over longer lengths than normally allowed by diffraction. Thus very high gain per unit pump power amplifiers and very low threshold lasers are made possible. Planar waveguides also allow easy access to the guided wave which can be useful for integrated functions (gratings, modulators etc) and good heat removal in high power devices. Here two methods of producing planar waveguide lasers in a variety of interesting host crystals are discussed.
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