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Application: Indium Spectroscopy
Indium is a very reactive metal of the third group of
the table of elements. It was first discovered by Reich and Richter in 1863
using spectroscopic investigations. Due to its typical blue color of the
spectral lines it was named after the collor Indigo. It is characterized by one
valence electron. The natural abundance of Indium isotopes is
113In(4.3%) and 115In(95.7%).
There are several optical transitions at 410nm and
451nm. Their electronic levels are shown in the excerpt of the level scheme. Due
to the low natural abundance of 113In, only the transitions of
115In are shown.
All four possible optical transitions at 410nm are
observed during an In absoption experiment with our tunable external cavity
diode lasers as shown on the above absorption spectra. The lower figure shows
the Lamb dip of one transition, investigated with a typical saturation
absorption experiment.
These experiments have been performed with our TEC100
Blue Littrow Laser System, as well as with our TEC500 Blue Littman Laser System.
For more details, please check our publications.  |
