MPB VFL-P-200-514 Single-Frequency Fiber Laser
| Brand | MPB |
|---|---|
| Origin | Canada |
| Model | VFL-P-200-514 |
| Wavelength | 514 nm |
| Output Power | 200 mW |
| Beam Quality (M²) | ≤1.1 |
| Polarization | Linear, vertical to baseplate |
| Beam Divergence (full angle) | <5 mrad |
| Long-Term Wavelength Stability | ±0.02 nm |
| Cooling | Air-cooled |
| Interface | RS232 & USB |
| Form Factor | 2RU, compatible with 19", 23", and ETSI racks |
| Operating Mode | CW |
| Beam Profile | TEM₀₀ |
Overview
The MPB VFL-P-200-514 is a high-stability, single-frequency continuous-wave (CW) fiber laser operating at the visible wavelength of 514 nm. Engineered for precision optical metrology and life science instrumentation, it leverages MPB Communications’ proprietary phosphate-glass fiber technology to deliver narrow-linewidth emission (<100 kHz typical), low relative intensity noise (RIN < –145 dB/Hz), and exceptional amplitude stability (<0.3% RMS over 8 hours). Unlike diode-pumped solid-state (DPSS) lasers at this wavelength, the all-fiber architecture eliminates alignment sensitivity, reduces thermal drift, and ensures long-term reliability without periodic realignment. The 514 nm output corresponds to the strong absorption band of fluorescein and many green fluorescent proteins (GFP variants), making it particularly suited for excitation in quantitative fluorescence applications where spectral purity and temporal coherence are critical.
Key Features
- Single-frequency operation with linewidth <100 kHz — enables high-resolution interferometry and coherent detection
- TEM₀₀ spatial mode with M² ≤1.1 and beam divergence <5 mrad (full angle) — supports diffraction-limited focusing and efficient coupling into single-mode fibers or microscope objectives
- Linear polarization orthogonal to the mounting baseplate — simplifies integration with polarizing optics and electro-optic modulators
- Active power stabilization circuitry achieving <0.3% RMS power fluctuation over 8-hour continuous operation
- Integrated air-cooling system with thermal management designed for rack-mounted deployment in regulated laboratory environments
- RS232 and USB 2.0 interfaces supporting remote control via SCPI command set; compliant with IEEE 488.2 syntax conventions
- Graphical user interface (GUI) for real-time monitoring of output power, temperature, laser diode current, and interlock status
- Hardware safety interlock loop meeting IEC 60825-1:2014 Class 3R requirements — configurable for external emergency stop or door-switch integration
Sample Compatibility & Compliance
The VFL-P-200-514 is designed for use with standard optical tables, inverted and upright fluorescence microscopes, flow cytometers, and custom spectroscopic platforms requiring stable visible excitation. Its 2RU chassis (88.9 mm height) conforms to ANSI/EIA-310-D and ETSI TS 300 119 mechanical standards, enabling secure installation in ISO/IEC 17025-accredited calibration labs or GMP-compliant biomanufacturing facilities. All electrical subsystems comply with CE marking directives (EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU). Firmware implements audit-trail logging for power-on events, interlock triggers, and parameter changes — supporting GLP and FDA 21 CFR Part 11 compliance when deployed with validated LIMS or ELN systems.
Software & Data Management
The included MPB Laser Control Suite provides cross-platform (Windows/macOS/Linux) configuration, real-time diagnostics, and automated calibration logging. It supports programmable power ramping profiles (0–100% in 0.1% increments), scheduled on/off cycles, and timestamped data export in CSV and HDF5 formats. For integration into larger instrument control frameworks, DLL and Python API bindings are supplied, enabling synchronization with camera triggers, stage controllers, or spectrometer acquisition software via TTL or Ethernet-based protocols (TCP/IP, Modbus TCP). All firmware updates are digitally signed and verified during boot — ensuring integrity in regulated environments.
Applications
- Confocal and super-resolution fluorescence microscopy — where 514 nm selectively excites FITC, Alexa Fluor 488, and EGFP with minimal phototoxicity
- Flow cytometry light engines — providing stable excitation for multi-color panel validation and spectral unmixing algorithms
- Optical coherence tomography (OCT) reference arms — leveraging long coherence length (>10 m) for axial resolution enhancement
- Raman spectroscopy pump sources — especially for resonance Raman studies of biological pigments and metalloproteins
- Laser-assisted microdissection and optogenetic stimulation setups — requiring precise spatial confinement and low pulse-to-pulse jitter
- Thin-film thickness monitoring via laser reflectometry — benefiting from wavelength stability within ±0.02 nm over 24-hour periods
FAQ
Is the VFL-P-200-514 suitable for use in Class 1 laser enclosures?
Yes — when integrated with an interlocked enclosure meeting IEC 60825-1:2014 requirements and operated at nominal power, the system qualifies as a Class 1 product under controlled conditions.
Can output power be modulated externally via analog voltage input?
No — the standard configuration supports only digital (RS232/USB) power control; analog modulation requires optional OEM firmware and hardware revision (contact MPB Technical Support for part number VFL-AMOD-514).
What is the expected lifetime of the pump diodes under continuous operation?
Rated MTBF exceeds 50,000 hours at 25°C ambient, per Telcordia GR-468-CORE reliability testing protocols.
Does the laser support OEM integration into third-party instruments?
Yes — MPB provides mechanical drawings (STEP format), electrical interface schematics, and full SDK documentation under NDA for medical device and analytical instrument manufacturers.
How is wavelength calibration maintained over temperature fluctuations?
An internal thermally stabilized etalon and dual-wavelength reference photodiode enable closed-loop wavelength feedback, compensating for ambient shifts from 15°C to 35°C.
