800nm Chirped Mirror PC1332-80x20-20

Overview

The 800nm Chirped Mirror -40fs² (PC1332, Ultrafast Innovations) is a broadband dispersive mirror (BBDM) engineered for precise GDD compensation in Ti:Sapphire laser systems operating from 450–1000 nm with a center wavelength of 725 nm. Delivering -40 fs² group delay dispersion per bounce, this P-polarized chirped mirror at 5° AOI provides fine-tuned negative dispersion control for intracavity dispersion management and external pulse compression in few-cycle laser architectures.

The -40 fs² GDD value positions this mirror in the low-dispersion regime, ideal for applications requiring incremental dispersion adjustment without over-compensating material GVD. With ~150 bounces needed to offset 6000 fs² of accumulated dispersion, this mirror excels in multi-pass compressor designs and oscillator cavity layouts where precise, distributed compensation is critical for sub-10 fs pulse generation and stabilization.

Applications

• Ti:Sapphire Oscillator Intracavity Dispersion Management: Fine GDD control for few-cycle pulse generation and stabilization in broadband mode-locked lasers centered at 725–800 nm
• CPA and OPCPA System Stretcher/Compressor Stages: Precise negative dispersion compensation in chirped pulse amplification systems with OPA pumping at 800 nm
• Multi-Pass Pulse Compressors: Distributed GDD compensation architectures requiring gradual dispersion adjustment across 450–1000 nm spectral bandwidth
• Ultrafast Spectroscopy Beam Delivery: Dispersion pre-compensation for maintaining sub-10 fs pulse fidelity through optical transmission elements

Construction & Performance

Manufactured on an 80.0 × 20.0 mm UV-fused silica substrate, this chirped mirror features ion beam sputtered (IBS) multi-layer dielectric coatings optimized for R>99% reflectance across the full 450–1000 nm operational bandwidth. Specified for P-polarization at 5° angle of incidence, the coating architecture maintains flat GDD response while providing 0.2 J/cm² laser-induced damage threshold for femtosecond pulses. The ultra-broadband design supports octave-spanning Ti:Sapphire systems and wavelength-tunable OPA configurations without requiring mirror exchange.

Storage & Handling

Operate at 25 °C, 40–60% RH. Clean only with >99% optical-grade ethanol and lint-free lens tissue using single-pass drag method. Avoid abrasive cloths and water.