BragGrate™ Pulse

Ultra-short pulse stretcher & compressor

BragGrate™-Pulse is a volumetric Bragg grating in reflecting geometry with a period gradually varying along the direction of beam propagation (so-called chirped Bragg grating, CBG). BragGrate™-Pulse is the first commercially available CBG-based product (since 2006) especially designed for stretching / compression of fs- and ps- pulses.

BragGrate™ Pulse

Specifications

• Spectral bandwidth: 1-100 nm
• Operating range: 900-2500 nm
• Thickness: 10-35 mm
• Stretching time: 10-180 ps (FWHM)
• Efficiency: 60% to >95%
• Apertures: up 8×8 mm

Typical Specs of BragGrate™- Pulse for
1030 nm spectral range

Output beam shape after passing 30-mm thick BragGrate™ Pulse in both directions

• Center wavelength: 1032 nm
• Spectral bandwidth: 5, 10, 25 nm
• Diffraction efficiency: > 75%
• Thickness: 20, 30 mm
• Stretching time (FWHM): ~ 150 ps
• Dispersion rate: ~ 6, 10, 60 ps/nm
• Compressed pulse duration: < 200 fs

Product Features

• Compact geometry and easy to align
• Ideal for industrial and scientific applications
• High power operation (up to 1 kW average power)
• High energy operation (up to 1 mJ pulse energy)
• Environmentally stable
• Robust, easy to handle and clean
• Preserves diffraction limited quality of femtosecond laser beam with diffraction efficiency exceeding 80%

Compressed pulse profile theoretical vs measured data with 30-mm thick BragGrate™ Pulse

Applications

BragGrate™ Pulse is for temporal stretching of a reflected ultrashort pulse and recompression of this pulse if launched from the opposite side of the grating.