RUBY LASER
Ruby Laser consists of a rod of artificial Ruby Crystal of length nearly 5 cm and diameter nearly 1 cm with its end plane. The artificial Ruby is the aluminum oxide (〖Al〗_2 O_3 ) crystal mixed with 0.05% impurity of chromium oxide. One end of this rod is fully silvered so that end good reflector. The other end of the rod is partially reflector. The rod is kept inside the glass tube which is surrounded by flash tube in form of coil. The flash tube is filled with xenon (xe) gas, the end of the flash tube are connected to power supply to produce flashes since most of the post energy used in producing flashes change into the heat therefore to cool the tube, cold water is allowed to flow continuously in the glass tube.
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