SAIM

SAIM controls precision laser beam scanning and synchronization to enable azimuthal scanning SAIM and multiangle TIRF acquisitions that reduce uneven excitation fields caused by laser interference.

Key Features:

• Precision Synchronization: Ensures accurate timing between the instrument computer, beam scanning system, and excitation source to improve data quality and reduce sample damage during acquisitions.
• Azimuthal Beam Scanning: Implements azimuthal beam scanning principles from TIRF to eliminate uneven excitation fields caused by laser interference.
• Integrated Precision Analog Circuitry: Provides waveform generation, multiplexed analog outputs, and native hardware triggers to support fast circle-scanning acquisitions for azimuthal scanning SAIM and multiangle TIRF.
• Optimized Firmware Routines: Uses tailored firmware routines to enhance acquisition performance and reduce artifacts arising from synchronization errors typical of software control.
• Low Communication Latency: Minimizes communication latency to reduce image intensity fluctuations and reconstruction artifacts during microscopy operations.
• Microcontroller-based Prototyping Architecture: Employs concepts from Arduino microcontroller boards for a programmable hardware architecture supporting instrument control.

Scientific Applications:

• Azimuthal scanning SAIM: Enables SAIM experiments requiring azimuthal beam scanning to obtain consistent excitation and axial position measurements.
• Multiangle TIRF: Supports multiangle TIRF acquisitions that require rapid circle-scanning and precise timing of excitation sources.
• High-precision optical microscopy beam control: Applies to microscopy studies that demand coordinated control of beam scanning, waveform output, and hardware triggering to reduce imaging artifacts.

Methodology:

Firmware implements waveform generation, multiplexed analog outputs, native hardware triggers, and precise synchronization between the instrument computer, beam scanning system, and excitation source to perform fast circle-scanning acquisitions and reduce synchronization-induced artifacts.