Pressure and temperature tuning of laser diodes

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Pressure and temperature tuning of laser diodes
Institute of High Pressure Physics
(UNIPRESS) WWW.BRIGHTER.EU
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Basic idea

• Increase of the bandgap of semiconductors with
• Decreasing temperature
• DT -200K gt DE80 meV
• Increasing hydrostatic pressure
• DP 20 kbar gt DE200 meV
• Or both...
• DE280 meV

Ambient conditions
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Pressure cell scheme
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Pressure cell scheme
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Pressure and temperature tuning combined for red
lasers
Emission spectra of the laser tuned by
temperature at different pressures.