Indium (extra bit) – Periodic Table of Videos

published on July 9, 2020

There's one extra application of indiumwhich was really quite important in myown research in fact he got us onto thefront cover of the journal new scientistyo you can see this is me with hairslightly less gray than now no periodictable time what was I thinking of we

Were using a material called indiumantimonide that's an alloy of indium ingroup 3 and antimony in group 5 whichmakes a so-called semiconductor we wereusing this to make a tunable infraredlaser or rather we were using technology

Developed by a company we Sean a fixedwavelength infrared laser onto thiscrystal which was kept at very lowtemperature four degrees absolute in ahigh magnetic field and as you tune themagnetic field you could get tunable

Infrared radiation had a wonderful namespin flip laser or in fact spin flipRaman laser it never workedenormous ly well but what was importantwas that he got me and my PhD supervisorand collaborator Jim Turner really

Interested in infrared lasers got us onthe cover and this has had a big effectin the work of our research group andnow my colleague Mike George here inNottingham has got wonderful infraredlasers and doing terrific experiments

And it all had its origin long ago withthis magazine articleand in fact I got the cell we used touse here the cells made out of copperand it's cooled with liquid nitrogenthat goes through one of these pipes and

Out of the other there's a littlechamber inside with windows that aretransparent to infrared light

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