ZOLIX FLM1-12.7C05-800 Femtosecond-Low-Dispersion Dielectric Mirror

Overview

The ZOLIX FLM1-12.7C05-800 is a high-precision dielectric mirror engineered specifically for femtosecond laser systems operating in the near-infrared spectral region. Unlike conventional broadband or narrowband mirrors, this optic is designed to minimize group delay dispersion (GDD) and higher-order phase distortions—critical parameters that directly impact pulse fidelity, temporal compression, and peak intensity stability in ultrafast optical setups. Its multilayer coating is fabricated using plasma ion-assisted deposition (IAD), a process that yields superior film density, adhesion, and environmental stability compared to standard thermal evaporation. The resulting mirror maintains sub-λ/10 surface flatness (measured at 633 nm prior to coating) and delivers >99.8% reflectivity across a tightly controlled 750–850 nm band at 45° angle of incidence—making it ideal for Ti:sapphire oscillator and amplifier chains, CPA (chirped pulse amplification) beam steering, and ultrafast pump-probe configurations.

Key Features

• Ultra-low group delay dispersion (GDD) optimized for <100-fs pulses—preserves temporal pulse profile without requiring additional dispersion compensation optics
• Plasma IAD-coated dielectric stack ensures high mechanical durability, low absorption (<0.05%), and long-term stability under high-repetition-rate irradiation
• Surface figure accuracy of λ/10 @ 633 nm (pre-coating) and parallelism ≤5 arcseconds—enables precise wavefront preservation in interferometric and cavity-coupling applications
• High laser-induced damage threshold (LIDT) certified per ISO 21254-1: >0.5 J/cm² (800 nm, 35 fs, 1 kHz, Ø0.1 mm), suitable for regenerative amplifiers and multi-Watt fs oscillators
• Strict control of coating uniformity and stoichiometry ensures batch-to-batch repeatability—essential for system integration and OEM deployment

Sample Compatibility & Compliance

This mirror is compatible with standard kinematic mounts (e.g., Thorlabs KM100, Newport UMB12.7) and vacuum-compatible stages. It meets surface quality requirements per ISO 10110-7 (scratch-dig 10-5) and coating durability standards aligned with MIL-C-48497A for military-grade optical components. While not intrinsically certified to FDA or IEC 61000-4 series, its performance characteristics support compliance with laser safety standards (IEC 60825-1:2014) when integrated into Class 4 laser systems. All units undergo 100% spectral verification via calibrated spectrophotometry (PerkinElmer Lambda 1050+) and surface inspection via Zygo Verifire™ interferometry prior to shipment.

Software & Data Management

No embedded firmware or proprietary software is associated with this passive optical component. However, ZOLIX provides full spectral reflectance data (.csv and .txt formats), interferometric surface maps (.zmx, .dat), and LIDT test reports upon request—compatible with common optical design platforms including Zemax OpticStudio, CODE V, and FRED. Traceable calibration certificates include NIST-traceable wavelength reference and uncertainty budgets compliant with ISO/IEC 17025 guidelines. For GMP or GLP environments, raw metrology logs and material lot traceability are available under formal QA documentation packages.

Applications

• Pulse compression and stretching in chirped pulse amplification (CPA) architectures
• Beam delivery and cavity folding in Ti:sapphire and Yb-based femtosecond oscillators
• Interferometric timing synchronization in multi-channel ultrafast spectroscopy
• High-fidelity wavefront relay in attosecond beamlines and HHG (high-harmonic generation) vacuum chambers
• OEM integration into commercial ultrafast laser systems requiring guaranteed dispersion control and thermal stability

FAQ

What distinguishes the FLM1 series from the FLM2 series?
The FLM1 series prioritizes high laser damage threshold and minimal GDD within a narrower bandwidth (750–850 nm), whereas the FLM2 series broadens the operational window to 730–870 nm at the expense of slightly reduced LIDT margin—optimized for tunable fs sources.
Can this mirror be used at angles other than 45°?
Yes, but reflectivity and GDD performance degrade outside ±3° of nominal incidence; custom designs for 0°, 30°, or 56.5° (Brewster’s angle for fused silica) are available upon request.
Is the substrate material specified?
Standard substrate is UV-grade fused silica (Suprasil® 3001 or equivalent), with CTE = 0.55 × 10⁻⁶/K and homogeneity Δn < 1 × 10⁻⁶—optional substrates include CaF₂ for deep-UV extension or BK7 for cost-sensitive alignment optics.
Do you offer anti-reflection coated backsides?
Yes—single-layer MgF₂ or broadband AR coatings (R < 0.25% over 700–900 nm) can be applied to suppress etalon effects in high-finesse cavities.
How is coating adhesion verified?
Per ISO 2808 and ASTM D3359, all mirrors undergo tape peel testing (Method B) and humidity cycling (40°C / 90% RH for 240 h) with post-test reflectance verification to ensure no delamination or spectral shift.