Emission and absorption

E5.2.7.2 Emission and absorption


    Features

  • Principle of diode laser.
  • Pig tailed diode laser.
  • Temperature control.
  • Nd:YAG Crystal.
  • Absorption spectrum.
  • Emission spectrum.
  • Spectrum analyzer.
  • Computer control.
Principle of operation

A 40 mW fibre pig-tailed laser diode with a thermoelectric cooler is used as a pump light source. The controller and the laser diode is accommodated inside a slot-in module. The diode laser radiation is transferred by means of a fibre patch cable to the fibre holder (FH). The lens (C) focuses the radiation into the Nd:YAG rod. The generated emission passes the filter (Fi) to remove residual pump power and is transferred via the fibre telescope (FT1) either to the photodetector module for measurements in the time domain or to the spectrum analyser for the spectral analysis OMA.
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