Abstract
Deformable mirror (DM) is a common-used active freeform optical element. We introduce the concept of Woofer-Tweeter DM system for controlling focal-plane irradiance profiles. We firstly determine a freeform reflective surface for transforming a given incident laser beam into the desired focal-plane irradiance distribution by numerically solving a standard Monge-Ampère equation. Then, we use a low-bandwidth Woofer DM to approximate the required freeform reflective surface and a highbandwidth Tweeter DM to compensate the residual error. Simulation results show that, compared with single DMs, the Woofer-Tweeter DM system brings the best focal-plane irradiance performances.
| Original language | English |
|---|---|
| Pages (from-to) | 8871-8879 |
| Number of pages | 9 |
| Journal | Optics Express |
| Volume | 22 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 21 Apr 2014 |
| Externally published | Yes |