TY - RPRT TI - Efficient nonlinear post-compression to sub-20 fs using an air-filled multipass cell AU - Feng, Chengyong [University of Rochester, NY (United States)] AU - Bromage, Jake [University of Rochester, NY (United States)] PY - 2026 DO - 10.1117/12.3078300 UR - https://www.osti.gov/biblio/3022756 ID - 3022756 ER -