Keopsys PGFL-KULT Series Ultrafast Pulsed Green Fiber Laser

Overview

The Keopsys PGFL-KULT Series Ultrafast Pulsed Green Fiber Laser is a high-performance, diode-pumped solid-state (DPSS) laser system engineered for precision applications requiring stable nanosecond pulses at the visible 532 nm wavelength. Based on intracavity frequency-doubling of a master oscillator power amplifier (MOPA) architecture, this laser delivers tightly controlled pulse parameters with exceptional temporal stability and beam quality. Its design integrates a low-noise seed oscillator, high-gain Yb-doped fiber amplification stages, and an efficient LBO or BBO nonlinear crystal for second-harmonic generation (SHG). The resulting output exhibits diffraction-limited beam propagation (M² 20 dB), and minimal amplitude noise (<0.5% RMS over 1 hr), making it suitable for demanding tasks in time-resolved spectroscopy, laser-induced breakdown spectroscopy (LIBS), micromachining of transparent materials, and optical parametric oscillator (OPO) pumping.

Key Features

• Stable 532 nm green output with <1.5% pulse-to-pulse energy fluctuation (RMS)
• Nanosecond pulse duration tunable from 1 ns to 5 ns via adjustable gain saturation and cavity dumping
• Fixed repetition rate of 50 kHz, optimized for high-throughput ablation and synchronous detection schemes
• Integrated thermal management ensuring ambient operation from 0 °C to +70 °C without active water cooling
• Robust all-fiber seed + free-space SHG architecture minimizing alignment sensitivity and long-term drift
• Compliant with IEC 60825-1:2014 Class 4 laser safety requirements; includes interlock-ready shutter interface and emission indicator LED
• Optional fiber pigtail (SM630 or PM630) with FC/APC connector or collimated free-space output (1.5 mm beam diameter, divergence <0.5 mrad)

Sample Compatibility & Compliance

The PGFL-KULT laser is routinely deployed in analytical and industrial environments where reproducible photon–matter interaction is critical. It supports direct irradiation of dielectrics (e.g., fused silica, sapphire), semiconductors (Si, GaAs), and biological tissues without significant thermal diffusion—enabling clean ablation craters with sub-micron edge definition. All units undergo full factory calibration traceable to NIST-certified photodiode standards and are supplied with a Certificate of Conformance (CoC) detailing measured pulse energy, temporal profile (FROG or autocorrelation verified), beam pointing stability (<5 μrad/°C), and spectral bandwidth (<0.1 nm FWHM). The system meets ISO 13406-2 for laser product safety documentation and supports integration into ISO/IEC 17025-accredited laboratories under GLP/GMP-aligned operational protocols.

Software & Data Management

Control is provided via USB 2.0 or RS-232 interface using Keopsys’ Laser Control Suite (v4.2+), a Windows-based application supporting real-time monitoring of output power, internal temperature sensors, pump diode current, and interlock status. The software enables remote configuration of trigger delay (0–100 ms, 100 ps resolution), external TTL synchronization (rising-edge triggered), and user-defined burst modes (1–1000 pulses per burst). Exported data logs comply with ASTM E2913-13 for digital record integrity and include embedded timestamps synchronized to GPS-disciplined oscillators (optional). Audit trails meet FDA 21 CFR Part 11 requirements when paired with validated electronic signature modules and role-based access control.

Applications

• Laser-induced fluorescence (LIF) excitation in combustion diagnostics and plasma monitoring
• Pump source for ultrafast OPOs generating tunable mid-IR radiation (2–12 μm) in gas sensing applications
• Time-of-flight mass spectrometry (TOF-MS) ionization of large biomolecules with minimal fragmentation
• High-resolution surface texturing of medical-grade polymers (e.g., PEEK, polyimide) for cell adhesion enhancement
• Calibration reference for photodetector rise-time characterization (sub-nanosecond response validation)
• Nonlinear microscopy illumination where green excitation avoids UV phototoxicity while maintaining two-photon absorption cross-section

FAQ

Is the PGFL-KULT compatible with third-party pulse pickers or delay generators?
Yes—TTL-compatible sync output and external trigger input support seamless integration with commercial pulse selection systems (e.g., Quantum Composers, Berkeley Nucleonics) with jitter <50 ps RMS.
Can output polarization be rotated or converted to circular?
The standard linear polarization axis is fixed relative to the mechanical housing (horizontal orientation); optional half-wave plates or fiber-based polarization controllers are available for post-emission manipulation.
What maintenance is required during normal operation?
No consumables or periodic alignment are needed; only annual verification of pulse energy calibration against a NIST-traceable thermopile sensor is recommended for ISO/IEC 17025 compliance.
Does the laser support OEM integration into custom enclosures?
Yes—Keopsys provides mechanical drawings, thermal dissipation profiles, EMC test reports (EN 55032 Class B), and mounting flange specifications for turnkey system integration.
How is laser safety enforced during automated operation?
The unit features dual-channel hardware interlocks (IEC 61508 SIL2 compliant), integrated beam shutter with <100 μs closure time, and configurable emergency stop mapping via opto-isolated inputs.