TY  - RPRT
TI  - Axially symmetric on-axis flat-top beam.
AU  - Q Cao
AU  - S Chi
PY  - 2000
DO  - 10.1364/josaa.17.000447
UR  - https://pubmed.ncbi.nlm.nih.gov/10708024/
ID  - 10708024
ER  -