800nm Chirped Mirror PC70-38.1-12.7

Overview

800nm Chirped Mirror -40fs² is a broadband dispersive mirror (BBDM) engineered for ultra-wide spectral coverage with carefully balanced GDD across the full bandwidth across the 500–1050 nm operating bandwidth.

At ±40 fs²/bounce, accumulated dispersion stays well below the bandwidth-limited TBP, preserving few-cycle pulse temporal integrity through multi-bounce geometries. A double-angle BBDM design suppresses the GDD oscillations characteristic of single-angle chirped mirrors, enabling deployment as a single optic where conventional designs require matched pairs.

Applications

• Ti:Sapphire intracavity dispersion compensation
• external CPA-compressor stages for kHz amplifiers
• attosecond pulse generation drive lines
• multi-pass cell (MPC) nonlinear compression

Construction & Performance

Manufactured on a 38.1 mm diameter × 12.7 mm thick UV fused silica (UVFS) substrate with ion beam sputtered (IBS) dielectric multilayer coating, >99% reflectance specified as R>99%@500-1050nm. The mirror operates at 5° angle of incidence with p-polarized light. The IBS coating provides exceptional layer density, sub-ppm absorption losses, and long-term spectral stability — characteristics required for dependable performance in high-average-power amplifier chains.

Broadband 700–900 nm Ti:Sapphire-grade IBS dielectric coating ensures consistent dispersion control under typical fs-laser operating conditions. Compatible laser systems include Ti:Sapphire oscillators (Mira, Tsunami, Vitara, Octavius), Ti:Sapphire amplifiers (Coherent Legend, Spitfire, Astrella), and Cr:LiSAF lasers.

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.