Keopsys PEFL-KULT 1.5 µm Pulsed Erbium-Doped Fiber Laser Module

Overview

The Keopsys PEFL-KULT is a compact, turnkey pulsed erbium-doped fiber laser module engineered for high-reliability operation in demanding industrial, scientific, and defense applications. Operating at the eye-safe 1.5 µm wavelength—within the low-absorption atmospheric transmission window and well above the retinal damage threshold—it leverages stimulated emission from Er³⁺-doped silica fiber under diode-pumped excitation. The laser employs master oscillator power amplifier (MOPA) architecture with all-fiber, polarization-maintaining (PM) components to ensure diffraction-limited beam quality (M² < 1.1), temporal stability, and robust alignment-free performance. Designed for integration into LIDAR systems, time-of-flight (ToF) rangefinders, differential absorption LIDAR (DIAL), optical coherence tomography (OCT) seeding, and nonlinear frequency conversion setups, the PEFL-KULT delivers precise control over pulse shape, energy, and timing without requiring active cooling or external stabilization.

Key Features

• Eye-safe 1.5 µm output compliant with IEC 60825-1:2014 Class 1M / Class 4 operational modes (dependent on configuration and optical delivery)
• High peak power up to 15 kW with pulse energies scalable to 100 µJ—enabling efficient nonlinear interactions and long-range detection
• Adjustable pulse width from 0.5 ns to 200 ns, supporting both ultrafast time-resolved measurements and high-energy nanosecond interrogation
• Repetition rate tunable from 10 Hz to 1 MHz, facilitating flexible duty-cycle optimization for thermal management and signal averaging
• Hermetically sealed, conduction-cooled module with operating temperature range of −35 °C to +65 °C—qualified for airborne, vehicular, and outdoor field deployment
• Integrated digital interface (RS-232 or TTL-compatible trigger I/O) for synchronization with external detectors, scanners, or data acquisition systems

Sample Compatibility & Compliance

The PEFL-KULT is not a sample-contacting instrument; it serves as a coherent light source for remote or non-invasive measurement techniques. Its 1.5 µm output exhibits minimal scattering in biological tissue and high transmission through fog, smoke, and humidity—making it suitable for atmospheric sensing, medical imaging, and safety-critical proximity sensing. The module complies with CE marking requirements for electromagnetic compatibility (EMC Directive 2014/30/EU) and low-voltage safety (LVD Directive 2014/35/EU). Optical safety classification follows EN 60825-1:2014, and full test reports—including divergence, pointing stability (<5 µrad/°C), and pulse-to-pulse energy stability (<±3% RMS over 8 hours)—are supplied with each unit. For regulated environments (e.g., ISO 13485-certified medical device manufacturing or FAA-approved avionics integration), documentation supports traceable calibration and GLP-compliant validation protocols.

Software & Data Management

The PEFL-KULT operates in standalone mode via front-panel controls or remotely via ASCII command set over RS-232. Keopsys provides the optional K-LaserControl GUI—a Windows-based application enabling real-time monitoring of laser status (temperature, current, pulse count), parameter scripting (burst mode, ramped repetition rates), and logging of operational metadata (timestamped pulse energy, diode current, TEC voltage). All communication adheres to SCPI-like syntax and supports integration into LabVIEW, MATLAB, or Python-based automation frameworks using standard serial or USB-to-serial drivers. Audit trails, user access levels, and configuration change logs are available when deployed with third-party MES or QMS platforms meeting FDA 21 CFR Part 11 requirements.

Applications

• Coherent and direct-detection LIDAR for autonomous vehicle perception, wind profiling, and greenhouse gas monitoring (e.g., CH₄, CO₂)
• Time-of-flight 3D mapping in industrial metrology and robotics navigation
• Seed source for optical parametric amplifiers (OPAs) and difference-frequency generation (DFG) in mid-IR spectroscopy
• Optical time-domain reflectometry (OTDR) for telecom fiber fault localization with enhanced dynamic range
• Nonlinear microscopy and multiphoton excitation where water absorption minimization is critical
• Hard-target ranging and vibrometry in defense and aerospace test ranges

FAQ

Is the PEFL-KULT compatible with single-mode fiber delivery systems?
Yes—the output is polarization-maintaining (PM980) with FC/APC connectorization, optimized for coupling into SMF-28 or PM fibers with >90% efficiency using standard collimation optics.
Can pulse width and repetition rate be modulated dynamically during operation?
Yes—both parameters are software-controllable in real time via RS-232 commands; no hardware reconfiguration is required between settings.
Does the module include built-in diagnostics for predictive maintenance?
Yes—it continuously monitors diode junction temperature, TEC drive current, and internal photodiode feedback, reporting anomalies via status registers accessible through the serial interface.
What is the typical warm-up time to achieve specified pulse energy stability?
Less than 15 minutes from cold start at 25 °C ambient; full thermal equilibrium (±0.1 °C) is achieved within 30 minutes.
Are OEM integration kits available for mechanical and electrical interfacing?
Yes—Keopsys offers mounting brackets, thermal interface pads, EMI-shielded enclosure variants, and custom cable harnesses upon request, with full mechanical drawings and pinout schematics provided under NDA.