My MBE chamber at Prof. Yao's laboratories ...
The MBE I used was one of six systems at Yao's lab. It consisted of a GaAs (left) and a ZnSe (right) chamber.
An additional analysis chamber was used for in-situ Auger-spectroscopy and XPS (shiny chamber in the center).
Load-lock and the ZnSe-chamber plus controls. My collegue Kumagai San fills the nitrogen trap with liquid nitrogen (left). The room where we picked up the cryo-gases from (right).
Moly-blocks with small samples. The colourful interference fringes are the result of internal reflections in thin films of amorphous ZnSe deposited on the moly-block. ZnSe is transparent in the visible range and absorbs deep blue and ultra-violet light (<450 nm). Thick layers of ZnSe have a yellow colour. Molybdenum is used for sample carriers since it is very inert against chemical reactions and produces only a negligible vapour pressure when heated, while providing a good heat transfer.
I shared my office on the 7th floor with three more guest researchers

Darren Bagnall (left), Pierre Tomasini and Keiji Morikawa.
Keiji's farewell-message in Japanese (below) next to a
discussion about fluctuating quantum well potentials ...

(left) me, working out some view graphs for a presentation.