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109.5um Cascade LPG formation
Spectra's recorded during the formation of a cascade LPG using the overwrite fabrication method. Each LPG is 3cm long with a 3cm gap between them.
The LPGs were prepared with a 5second exposure time over repeated cycles. Each spectra was taken after a single cycle up to a total to 60 cycles. The Left LPG was written first.
