1300-2000nm Chirped Mirror -400fs²

Overview

The 1300-2000nm Chirped Mirror -400fs² is a high-performance dielectric chirped mirror engineered for compression and dispersion management in ultrafast laser systems. Reflectance bandwidth spans 1650–1950 nm centered near —. Group delay dispersion of -400 fs² per bounce enables stretching, compression, and chirped-pulse amplification across the NIR window served by Er:fiber, Tm:fiber, Cr:Forsterite, and OPCPA architectures.

Applications

• High-power 1650–1950 nm Tm:fiber CPA
• Large-aperture Holmium-band fs amplifier
• Telecom L-band high-energy compressor
• Industrial 1.7–2.0 µm fs system

Construction & Performance

• Substrate: UVFS, 80 mm × 20 mm
• Coating: Dielectric Coating, R>99.5%@1650-1950nm
• Angle of incidence: 5°
• Polarization: —
• Damage threshold: 0.2 J/cm² @ 800 nm reference (fs pulses)

Storage & Handling

Store in low-humidity dry cabinet with optical-grade lens tissue protection. Handle by the edges only — coating surface contact will degrade reflectance and damage threshold. Clean with high-purity acetone or methanol using the drop-and-drag technique; never wipe across the coated face. Avoid extreme temperature gradients that can cause stress birefringence in the substrate.