Measurement of beam quality degradation due to spherical aberration in a simple lens
- Cite this article as:
- Ruff, J.A. & Siegman, A.E. Opt Quant Electron (1994) 26: 629. doi:10.1007/BF00712922
We have measured the effect on laser beam quality factorM2 of spherical aberration in a simple planoconvex lens. Theory predicts that the laser beam quality should remain essentially unchanged until the incident beam widthw exceeds a critical widthwq above which the beam quality will degrade rapidly, with theM2 value increasing as (w/wq4). We find good agreement between this theory and our experimental data.