800nm Chirped Mirror PC1334-80x20-20

Overview

The 800nm Chirped Mirror -40fs² (PC1334-80x20-20) is a broadband dispersive mirror (BBDM) engineered for precise GDD compensation in Ti:Sapphire laser systems operating near 750nm center wavelength. Delivering -40 fs² of group delay dispersion per bounce across a 500–1000 nm spectral range, this P-polarized chirped mirror provides low-dispersion control ideal for sub-10 fs and few-cycle pulse compression in ultrafast oscillators and chirped pulse amplification (CPA) systems.

The -40 fs² GDD value positions this mirror in the low-dispersion category, making it specifically suited for fine-tuning residual dispersion in pre-compressed laser chains or for applications requiring minimal group velocity dispersion (GVD) accumulation per reflection. With approximately 150 bounces needed to compensate 6000 fs² of positive dispersion, this mirror enables compact folded-path designs in Ti:Sapphire oscillator cavities and OPCPA pre-compression stages where space constraints and alignment stability are critical.

Applications

• Ti:Sapphire oscillator intracavity dispersion management for sub-10 fs pulse generation at 750–850 nm
• CPA stretcher/compressor fine-tuning in femtosecond amplifier systems operating at 800 nm
• OPCPA seed pulse compression and pre-compensation for broadband parametric amplification
• OPA pump beam conditioning and temporal pulse shaping in visible-to-NIR nonlinear frequency conversion

Construction & Performance

Manufactured by Ultrafast Innovations (model PC1334_RC4), this 80.0 × 20.0 mm UVFS substrate features ion beam sputtered (IBS) multilayer coatings optimized for >98% reflectance across the full 500–1000 nm bandwidth. Designed for 5° angle of incidence with P-polarization, the mirror maintains excellent phase characteristics while achieving 0.2 J/cm² laser-induced damage threshold for femtosecond pulses. The large 80 mm aperture accommodates expanded beam profiles typical in high-energy ultrafast systems.

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.