Keopsys PEFA-SP-C High-Power Short-Pulse Fiber Amplifier
| Brand | Keopsys |
|---|---|
| Origin | France |
| Model | PEFA-SP-C |
| Output Power | 33 dBm (avg.) |
| Peak Power | 1 kW |
| Pulse Duration | fs–ps range |
| Repetition Rate | 10 MHz – 100 GHz |
| Polarization-Maintaining Output | Optional |
| Form Factor | Rack-Mountable or Module-Based |
| Core Technology | Yb-doped Double-Clad Fiber Amplification |
Overview
The Keopsys PEFA-SP-C is a high-performance, master oscillator power amplifier (MOPA)-configured short-pulse fiber amplifier engineered for demanding ultrafast laser applications. Based on ytterbium-doped double-clad fiber technology, it delivers exceptional peak and average power scaling while preserving critical pulse fidelity—including temporal profile, spectral bandwidth, and polarization state. Designed for integration into industrial, scientific, and defense-grade ultrafast systems, the PEFA-SP-C operates in the 1030–1080 nm wavelength window and supports input pulses from sub-100 fs to several ps in duration. Its architecture leverages low-noise seed amplification stages followed by high-gain, thermally optimized final-stage amplification—enabling stable, diffraction-limited beam quality (M² < 1.2) and long-term power stability (< ±0.5% RMS over 8 hours). Unlike bulk solid-state amplifiers, this all-fiber design eliminates air-path alignment, reduces sensitivity to environmental perturbations, and ensures robust operation in laboratory and OEM environments.
Key Features
- Peak output power up to 1 kW with preserved pulse contrast ratio (>10⁶) and minimal pedestal generation
- Average output power of 33 dBm (2 W), calibrated and traceable to NIST-traceable optical power standards
- Flexible repetition rate support from 10 MHz to 100 GHz—compatible with both actively mode-locked oscillators and RF-synchronized pulse pickers
- Polarization-maintaining (PM) output option with >20 dB PER (polarization extinction ratio) and integrated PM fiber pigtails (FC/APC or collimated free-space coupling)
- Modular or 19-inch rack-mount configuration with integrated thermal management, safety interlocks, and Class 4 laser enclosure compliance (IEC 60825-1:2014)
- Internal monitoring of pump diode current, fiber temperature, and output power via analog voltage outputs and digital RS-232/RS-485 interfaces
Sample Compatibility & Compliance
The PEFA-SP-C is compatible with standard single-mode (SMF-28) and polarization-maintaining (PANDA or PM980) input fibers operating at 1030–1080 nm. It accepts input pulse energies ranging from 100 pJ to 1 nJ and tolerates moderate timing jitter (< 500 fs RMS) without gain narrowing or spectral distortion. All units are CE-marked and comply with EN 61000-6-3 (EMI emission) and EN 61000-6-2 (immunity) standards. For regulated environments—including ISO 13485-certified medical device manufacturing or aerospace-grade laser processing—the amplifier supports optional firmware logging for GLP/GMP audit trails and can be configured with hardware-enforced safety protocols aligned with IEC 62471 (photobiological safety) and FDA 21 CFR Part 11 (electronic records and signatures) requirements upon request.
Software & Data Management
The amplifier includes embedded firmware with configurable gain control, automatic power stabilization (APC loop bandwidth: 10 kHz), and real-time diagnostics accessible via Keopsys’ proprietary LaserControl GUI (Windows/Linux/macOS). The GUI enables remote parameter setting—including pulse repetition rate mapping, gain scheduling per burst, and user-defined power ramp profiles. Logged data (output power, pump current, temperature) is exportable in CSV format with timestamping compliant with ISO/IEC 17025 calibration record retention guidelines. For system integrators, a full SCPI command set and Python SDK are provided, supporting seamless integration into LabVIEW, MATLAB, or custom PLC-based automation platforms.
Applications
- Ultrafast micromachining of transparent materials (e.g., glass, sapphire) requiring high peak intensity and minimal heat-affected zones
- Time-resolved spectroscopy setups including pump-probe, transient absorption, and THz generation
- High-energy laser seeding for chirped pulse amplification (CPA) systems operating at multi-mJ levels
- LIDAR and remote sensing transmitters requiring narrow linewidth, high pulse-to-pulse stability, and atmospheric transmission optimization at 1064 nm
- Nonlinear frequency conversion experiments (e.g., second-harmonic generation, optical parametric amplification) where polarization fidelity and pulse compression tolerance are critical
FAQ
What pulse durations are supported at full 1 kW peak power?
The PEFA-SP-C achieves rated peak power across pulse widths from 200 fs to 5 ps when driven with appropriate seed sources and dispersion compensation. Performance beyond this range requires case-specific characterization.
Is the amplifier qualified for continuous 24/7 operation?
Yes—thermal design and redundant cooling pathways enable uninterrupted operation under ambient temperatures ≤35°C and relative humidity ≤70% non-condensing, meeting Telcordia GR-468-CORE reliability specifications.
Can the unit be integrated into an existing laser cavity as an intra-cavity amplifier?
No—this is a strictly MOPA-configured, forward-amplifying device. It is not designed for bidirectional or resonant cavity integration.
Does the PM version include built-in polarization controllers?
No—PM output maintains linear polarization orientation defined by the input; active polarization control requires external waveplates or fiber squeezers.
What documentation is provided for regulatory submissions?
Each unit ships with a Declaration of Conformity, Factory Calibration Report (including spectral flatness, ASE suppression ratio, and pulse width verification), and RoHS/REACH compliance certificates. Extended validation packages (IQ/OQ/PQ protocols) are available under NDA.
