Oxxius LBX Series Multi-Wavelength Beam-Combined Laser System

Overview

The Oxxius LBX Series Multi-Wavelength Beam-Combined Laser System is an engineered solution for precision multi-spectral illumination in advanced optical instrumentation. Designed around a modular, microprocessor-controlled architecture, it integrates up to six independently addressable solid-state and semiconductor diode laser sources—each with TEM₀₀ spatial mode quality—into a single, compact, air-cooled platform. The system employs dichroic beam combining optics to achieve collinear or spatially separated multi-wavelength output with minimal spectral crosstalk (< −30 dB), enabling simultaneous or time-gated excitation across biologically relevant spectral windows (UV to NIR). Its core application domain spans quantitative fluorescence microscopy, where temporal stability (< 0.3% RMS power drift over 8 h), low noise (< 0.5% intensity noise, 10 Hz–10 MHz), and sub-millisecond channel switching are critical for techniques such as FRAP, FRET, and optogenetic stimulation.

Key Features

• Configurable 4-channel or 6-channel architectures with factory-optimized wavelength selection from a library of 21 standard wavelengths (375 nm to 1064 nm)
• Individual channel power up to 500 mW with active thermal stabilization and real-time photodiode feedback control
• Dedicated motorized shutters per laser channel (10 ms actuation, >10⁶ cycles lifetime) for precise temporal gating
• Integrated acousto-optic modulator (AOM) option enabling linearized analog modulation with >50 dB extinction ratio and <1 µs rise/fall time
• Polarization-maintaining (PM) fiber coupling (FC/APC or SMA905) with >85% coupling efficiency and extinction ratio >20 dB
• Native USB 2.0 and Ethernet (TCP/IP) interfaces supporting remote operation, firmware updates, and diagnostic telemetry
• Embedded smart controller with non-volatile event logging, runtime statistics, and self-diagnostics—including predictive fault detection for pump diodes and thermal sensors

Sample Compatibility & Compliance

The LBX Series supports seamless integration into regulated laboratory environments. All units comply with IEC 60825-1:2014 (laser safety Class 3B/4 depending on configuration), CE marking under the EU Machinery and EMC Directives, and RoHS 2015/863. For GxP-compliant workflows, the system’s embedded controller logs timestamped operational records—including power setpoints, shutter states, temperature readings, and error codes—with optional encryption and write-once archival modes aligned with FDA 21 CFR Part 11 requirements. It meets ISO 13485-aligned design controls for OEM integration into medical imaging devices and conforms to ASTM E2714-21 standards for performance verification of multi-laser excitation systems in flow cytometry and confocal platforms.

Software & Data Management

Oxxius provides native drivers for μManager (v2.0+), LabVIEW (2015 SP1+), and Python (PyVISA, NumPy-compatible API), enabling full programmatic control of all hardware parameters via ASCII-over-USB or TCP socket protocols. The included LBX Control Suite offers GUI-based configuration of modulation profiles, power ramping sequences, interlock monitoring, and synchronized shutter timing. Audit trails are exportable in CSV/JSON format with SHA-256 checksums. Remote diagnostics support secure SSH access for firmware-level troubleshooting; field-upgradable modules—including AOM drivers, PM fiber adapters, and additional wavelength channels—are validated via digital signature verification prior to installation.

Applications

• Light-sheet fluorescence microscopy (LSFM): Independent power balancing across 4–6 wavelengths enables optimized sample penetration and reduced phototoxicity
• Super-resolution localization microscopy (SMLM): Sub-100 ns shutter synchronization ensures precise activation/deactivation of photo-switchable fluorophores (e.g., PA-GFP, Dronpa)
• Confocal and multiphoton excitation: Co-aligned beams eliminate chromatic walk-off during galvo-scanning, improving pixel registration accuracy
• Flow cytometry: Multi-parameter excitation supports simultaneous detection of ≥6 fluorescent probes without spectral overlap compensation
• Optogenetics: Millisecond-scale channel switching enables precise temporal control of ChR2, C1V1, and ReaChR activation with minimal thermal artifact
• Quantitative spectroscopy: Stable, calibrated outputs serve as reference sources for Raman, fluorescence lifetime (FLIM), and absorption calibration

FAQ

Can the LBX system be upgraded from 4 to 6 wavelengths post-purchase?
Yes—OEM and turnkey variants support field upgrades via certified service kits, including mechanical mounting brackets, dichroic combiners, and firmware reconfiguration.
Is PM fiber coupling available for all wavelengths?
PM coupling is standard for 405–647 nm and optional for 375 nm, 785 nm, and 1064 nm; coupling efficiency and extinction ratio are measured and certified per unit.
Does the system support analog modulation without AOM?
Direct diode current modulation is supported at bandwidths up to 500 kHz; however, AOM integration is required for linearized, high-fidelity amplitude control above 10 kHz.
How is laser safety enforced during remote operation?
Hardware-enforced interlocks (including external key switch, door sensor, and emission indicator LED) remain active regardless of control interface; Ethernet commands require authenticated session tokens.
What documentation is provided for regulatory submissions?
Oxxius supplies a full Design History File (DHF) excerpt, Risk Management Report (ISO 14971), and test certificates for EMC, laser safety, and thermal performance—available under NDA for qualified customers.