Non-inertial scan angle multiplier for expanded fields-of-view.

ABSTRACT: In many laser scan engines, mechanical inertia imposes a tradeoff between mirror diameter (mass) and scan speed (cycle time) and/or scan angle amplitude. Ultimately, this limits the field-of-view and/or scan speed in multiphoton and confocal imaging, laser-based manufacturing, and other applications. To push parameters past this inertia limit, we present a non-inertial (stationary) add-on unit that doubles the scan angle amplitude while preserving both the beam size and cycle time, thus doubling the étendue (optical invariant) and overall system throughput. We demonstrate its use in two-photon calcium imaging of neural activity in living mice. We also adapt the approach to present a phase doubling unit that doubles the maximum range of phase modulators. Finally, we describe further variant

SUBMITTER: Yu CH 

PROVIDER: S-EPMC12259198 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature