800nm Chirped Mirror PC1451-L-25.4-6.35

Overview

The 800nm Chirped Mirror -70fs² (PC1451) from Ultrafast Innovations delivers precise GDD compensation of -70 fs² per bounce across 650–1000 nm, optimized for Ti:Sapphire oscillator and amplifier dispersion management. Centered at 825 nm with broadband coverage extending from deep red to near-infrared, this chirped mirror enables efficient pulse compression in standard sub-100 fs laser systems.

With a moderate -70 fs² GDD per reflection, this BBDM provides balanced dispersion control ideal for multi-bounce configurations in Ti:Sa resonators and CPA stretcher-compressor assemblies. The 650–1000 nm operational bandwidth ensures stable phase response across the full Ti:Sapphire gain spectrum, while compensating 6000 fs² of accumulated positive dispersion requires only ~86 bounces—enabling compact optical layouts without excessive beam walk-off.

Applications

• Intracavity dispersion compensation in Ti:Sapphire mode-locked oscillators generating sub-100 fs pulses
• CPA compressor stages for Ti:Sa amplifier systems with moderate accumulated GVD from stretchers and optics
• OPA and OPCPA front-end pulse conditioning for 800 nm pump lasers requiring precise GDD management
• Pre-compensation of positive dispersion in Ti:Sapphire beam delivery systems and optical parametric amplifier pump lines

Construction & Performance

Manufactured on 25.4 × 6.35 mm UVFS substrates, this 825nm chirped mirror features ion beam sputtered (IBS) multilayer dielectric coatings optimized for P-polarization at 5° AOI. The broadband coating achieves R>99.8% reflectance from 650–1000 nm, ensuring minimal loss in multi-bounce dispersion compensation configurations. The low angle-of-incidence design minimizes higher-order dispersion artifacts while maintaining excellent GDD uniformity across the specified wavelength range. LIDT rating of 0.2 J/cm² supports operation with femtosecond Ti:Sapphire oscillators and regenerative amplifiers.

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.