TY - JOUR AU - Kaplan, Simon AU - Hanssen, Leonard AU - Migdall, Alan AU - Lefever-Button, G C2 - SPIE series DA - 1998-10-08 DO - https://doi.org/10.1117/12.326679 LA - en PB - SPIE series PY - 1998 TI - Characterization of High-OD Ultrathin Infrared Neutral Density Filters ER -