Broadband Chirped Mirror PC2020-S-25.4-6.35

Overview

The UV/Visible Chirped Mirror -50fs² (Ultrafast Innovations PC2020) is a moderate-GDD dispersive mirror engineered for ultrafast laser dispersion management, providing -50 fs² of group delay dispersion per bounce across the 600–1200 nm operating bandwidth.

With -50 fs²/bounce, this mirror provides moderate negative group delay dispersion per reflection — supporting compressor designs that balance ripple control against bounce count and footprint. The single-angle BBDM design integrates cleanly into both intracavity and external compressor geometries.

Applications

• Ti:Sapphire / Yb-band crossover dispersion management
• Sub-50 fs pulse compression for OPCPA front-end seeders
• Multi-photon microscopy excitation in NIR window
• Broadband Cr:LiSAF / Cr:forsterite fs-laser compressor stages

Construction & Performance

Manufactured on a 25.4 mm diameter × 6.35 mm thick UVFS substrate with dielectric multilayer coating, R>99.0%@600-1200nm. The mirror operates at 7° angle of incidence with p-polarized light. The coating provides exceptional layer density, low absorption losses, and long-term spectral stability — characteristics required for dependable performance in fs-laser oscillator and amplifier chains.

The 0.2 J/cm² damage threshold (specified at 800nm) supports typical ultrafast laser fluences. Compatible with research-grade and industrial fs-laser systems requiring controlled dispersion at this operating wavelength.

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.