800nm Chirped Mirror HD15-12.7-6.35

Overview

The 800nm Chirped Mirror -1300fs² (Ultrafast Innovations HD15) delivers high negative group delay dispersion of -1300 fs² per bounce at 805nm center wavelength, optimized for compact pulse compression in Ti:Sapphire laser systems. This high-GDD chirped mirror operates across the 780–830 nm spectral range with R>99% reflectance, enabling efficient intracavity dispersion compensation and external compression stages in CPA and OPCPA architectures.

With |GDD| = 1300 fs² per reflection, this 805nm chirped mirror provides substantial dispersion compensation in minimal footprint—approximately 5 bounces compensate ~6500 fs² of positive GDD accumulated through gain media, optics, and propagation. This high dispersion-per-bounce design reduces cavity complexity and optical losses compared to lower-GDD alternatives, making it ideal for compact oscillator designs and space-constrained amplifier systems where minimizing bounce count is critical.

Applications

• Ti:Sapphire Oscillator Intracavity Compression: Compensate positive GVD from gain crystal and cavity optics to support sub-10 fs pulse generation at 800 nm
• CPA System Pre-Compression: Balance dispersive stretching in Ti:Sapphire regenerative and multipass amplifiers before final compression
• OPA/OPCPA Pump Line Dispersion Management: Optimize temporal overlap between 800 nm pump and signal pulses in optical parametric amplification systems
• Compact External Compressors: Build high-efficiency, low-bounce-count pulse compressors for ultrafast diagnostics and pump-probe spectroscopy setups

Construction & Performance

Manufactured on 12.7 mm diameter × 6.35 mm thick UVFS substrate with ion beam sputtered (IBS) multilayer dielectric coating. Specified for P-polarization at 5° angle of incidence with 99% reflectance across the 780–830 nm bandwidth. The precision-engineered coating profile provides -1300 fs² GDD with minimal higher-order dispersion contributions. Laser-induced damage threshold of 0.2 J/cm² supports operation with femtosecond Ti:Sapphire oscillators and amplified 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.