109.5um Cascade LPG formation PartridgeMatthew 2016 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.<div><br></div><div>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.</div>