Nanoelectronics laboratory: Optical properties
As part of Prof. Yang's Nanoelectronics Laboratory,
this facility is located in room 1316, A.V. Williams Building.
The laboratory has a cryogenic photoluminescence system, where an ion laser,
or a dye laser, or a Xenon lamp can be used as the excitation source, and
a cooled GaAs photomultiplier (operated in photon-counting mode) and a
Ge photoconductor (cooled PIN photodiode) can detect the luminescence from
infrared to UV. The system has been used to study, e.g., optical properties
of indirect bandgap semiconductor quantum wells.
In addition, a CO2 infrared laser is used for developing
a quantum well far-infrared laser.
A continuous-flow liquid helium cryostat can cool the sample to 10K
< T < 300K, allowing for variable temperature experiments.