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Pressure and temperature tuning of laser diodes

Pressure and temperature tuning of laser diodes. Institute of High Pressure Physics (UNIPRESS) WWW.BRIGHTER.EU. High pressure, low temperature. D E. CB. VB. Basic idea. Increase of the bandgap of semiconductors with: Decreasing temperature D T= -200K => D E=80 meV

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Pressure and temperature tuning of laser diodes

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

  2. High pressure, low temperature DE CB VB Basic idea • Increase of the bandgap of semiconductors with: • Decreasing temperature • DT= -200K => DE=80 meV • Increasing hydrostatic pressure • DP= 20 kbar => DE=200 meV • Or both... • DE=280 meV Ambient conditions

  3. Piston with wires Sapphire window Laser diode Microlens Pressure cell scheme

  4. Pressure cell scheme

  5. Pressure and temperature tuning combined for red lasers Emission spectra of the laser tuned by temperature at different pressures.

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