Femtonics Femto Smart Customizable Multiphoton Microscope

Overview

The Femtonics Femto Smart Customizable Multiphoton Microscope is an upright, research-grade multiphoton imaging platform engineered for high-fidelity in vivo and ex vivo neural circuit interrogation. Built upon femtosecond-pulsed laser excitation and nonlinear optical detection principles, the system leverages two-photon and three-photon fluorescence microscopy to achieve deep-tissue penetration (>1 mm in mouse cortex), reduced phototoxicity, and intrinsic optical sectioning without physical pinholes. Its core architecture integrates a rigid, motorized XYZ-adjustable frame with sub-micron mechanical stability—enabling precise co-registration of functional imaging, optogenetic stimulation, and photochemical uncaging across dynamic biological preparations. Developed by Femtonics (Budapest, Hungary), a leader in neuroimaging instrumentation with over 44 granted international patents and >200 peer-reviewed publications—including in Nature, Science, and Neuron—the Femto Smart platform serves more than 300 laboratories across 45 countries, supporting rigorous, reproducible neuroscience workflows under controlled experimental conditions.

Key Features

• Upright modular chassis with ±25 mm XYZ motorized travel range and micron-level positioning repeatability—optimized for integration with motorized stages, virtual reality rigs, and stereotaxic apparatuses.
• Three scanning configurations: high-speed resonant galvanometer, high-resolution galvo-only, or hybrid dual-scan mode for simultaneous structural and functional acquisition.
• Extended wavelength compatibility (680–1300 nm) supporting both two-photon excitation (e.g., GFP, tdTomato) and three-photon imaging (e.g., GCaMP at 1300 nm) for improved axial resolution and signal-to-noise ratio in scattering tissue.
• Optical path flexibility: multi-beam routing enables concurrent imaging and all-optical perturbation (optogenetics + uncaging) using shared excitation optics and dichroic separation.
• Bridge-mount mechanical interface replaces conventional baseplate—expanding working distance beneath objective and accommodating custom sample chambers, perfusion systems, or behavioral setups.
• Piezo-driven objective positioner (Z-axis) and motorized tilt unit (±30° pitch/yaw) allow rapid focal plane repositioning and oblique imaging geometry without stage translation.

Sample Compatibility & Compliance

The Femto Smart supports diverse biological preparations including awake head-fixed mice, anesthetized rodents, acute brain slices (200–500 µm), organotypic cultures, and dissociated neuronal networks. Its open-frame design permits seamless coupling with electrophysiology rigs, pressure ejection systems, and environmental control units (temperature, CO₂, humidity). All hardware and firmware comply with CE marking requirements for laboratory equipment. Software architecture supports audit-trail logging, user-access controls, and electronic signature capabilities—facilitating alignment with GLP, GMP, and FDA 21 CFR Part 11 regulatory expectations where applicable. System documentation includes ISO/IEC 17025–compatible calibration records for positional accuracy and laser power stability.

Software & Data Management

Acquisition and analysis are managed via MScan—a modular, Python-extendable software suite developed in-house by Femtonics. MScan provides real-time visualization, synchronized hardware triggering (laser, detectors, stimulators), and time-stamped metadata embedding per frame. It natively exports TIFF stacks with embedded spatial calibration, channel metadata, and scan parameters compliant with the OME-TIFF standard. Batch processing pipelines support motion correction (based on cross-correlation), ROI-based fluorescence quantification, and spike inference algorithms. For longitudinal studies, MScan integrates with LIMS-compatible databases and supports DICOM export for cross-platform data archival. Audit logs record operator ID, session timestamp, parameter changes, and file export events—ensuring full traceability required for publication and regulatory review.

Applications

• In vivo calcium imaging of cortical layer-specific neurons during sensory processing or learning paradigms.
• Three-photon structural imaging of microvasculature and amyloid plaques in Alzheimer’s disease models.
• Simultaneous optogenetic activation and two-photon calcium readout in defined projection pathways.
• Photo-uncaging of caged glutamate combined with dendritic spine morphology tracking.
• Ex vivo functional mapping of synaptic connectivity in acute hippocampal slices using multi-site photostimulation.
• Vascular contrast enhancement via green LED epi-illumination for dynamic angiography without exogenous dyes.

FAQ

Is the Femto Smart compatible with third-party lasers and detectors?
Yes—the system features standardized optical ports (SM1, SM2, and FC/APC interfaces) and TTL/Analog I/O for synchronization with external ultrafast lasers, PMTs, GaAsP detectors, and SPAD arrays.
Can it be upgraded from two-photon to three-photon capability post-purchase?
Yes—hardware upgrades include installation of a 1300-nm optimized scan lens, dispersion-compensated objective, and NIR-sensitive detection pathway, all supported under Femtonics’ modular service framework.
Does the software support automated drift correction during long-term imaging sessions?
Yes—MScan includes real-time non-rigid motion correction using GPU-accelerated iterative registration, validated for sessions exceeding 60 minutes in awake behaving preparations.
What level of technical support is provided for method development?
Femtonics offers application scientist-led remote and on-site protocol optimization, including custom scan pattern design, spectral unmixing setup, and stimulus-triggered acquisition sequencing.
Are maintenance contracts and calibration services available internationally?
Yes—global service coverage includes annual performance verification, laser power calibration, mechanical alignment certification, and firmware update management through authorized regional partners.