Abstract
A diffractive laser cavity mirror is described that can customize the amplitude and phase of a laser mode. The design of this diffractive element is shown for a square, flat-topped fundamental mode. The laser cavity has a theoretical fundamental mode loss of only 0.08% and a second-order mode loss of 48.2%, resulting in high modal discrimination. The fabricated mirror is tested in a Nd:YAG laser system. The resulting square flat-topped mode has an rms variation of 1.5% over the two-dimensional flat-topped region and a large discrimination against higher-order modes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 108-110 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 15 1994 |