Ultra-Fast Digital Beam Scanning for Super-Resolution Microscopy

18.09.2026

Imaging and Microscopy

Ref.-No.: 0105-5505-1-FG

The patented digital electro-optical scanning technology enables ultra-fast, nanometer-accurate laser beam positioning for advanced optical microscopy. Conventional mechanical beam steering is replaced with cascaded digital electro-optical deflectors, significantly increasing scanning speed, positioning precision and field of view while maintaining stable optical performance. The technology is particularly attractive for next-generation super-resolution microscopy platforms, including STED and MINFLUX systems, as well as high-performance confocal microscopes and precision photonic instrumentation.

Background

Modern laser scanning microscopy requires increasingly faster beam steering while maintaining nanometer-level positioning accuracy. Existing galvanometer-based scanners are limited by mechanical inertia, whereas analog electro-optical deflectors offer high speed but only over limited scan ranges and require complex analog control.

The presented technology introduces a digital beam steering/scanning architecture that combines multiple polarization-controlled electro-optical deflectors to achieve discrete, deterministic beam positioning with greatly expanded scan fields and excellent optical stability.

Technology

The technology employs cascaded digital electro-optical deflection stages in which the polarization state of the laser beam determines discrete angular deflection. Multiple deflection stages with progressively increasing angular increments create a hierarchical beam steering system capable of addressing a large number of scan positions.

Important technical features:

Cascaded digital electro-optical deflectors
Polarization-controlled beam steering
Tilting of the beam around a fixed point within the microscope objective pupil
Achromatic polarization optics for multi-wavelength operation
Optional analog fine-steering stage for continuous positioning
Efficient descanning of fluorescence emission independent of polarization
Optimized digital scan sequences (e.g., Gray-code addressing) to reduce switching frequency and photobleaching.