Ondax’s PicoPulse™ pulse stretcher/compressor filters enable high peak power in femtosecond pulsed laser systems, with a distortion free round output beam. Free space operation in PicoPulse™ filters allows larger input beams to be used with many orders of magnitude higher power than chirped Fiber Bragg Gratings (FBGs).
Ondax’s proprietary packaging is designed to minimize the spatial chirp commonly found in chirped volume holographic gratings (CVHGs). This robust, compact format is less complex than equivalent dispersive diffraction grating pairs, which require multiple components with precise alignment adjustment. The output is stable over a wide range of temperatures, with nearly diffraction limited beam quality.
Use as a stretcher or compressor by flipping the input facet 180°
Compact and easy to align
Low scatter and loss
Environmentally stable at high temperature and humidity
No degradation over time, even under high power illumination conditions
Free space diffraction efficiency >90%
Low spatial chirp
No stitching errors
Highly repeatable performance
Near diffraction limited beam quality
Temporal Stretching/Compression of Femtosecond Optical Pulses
Specifications
Technical Data
| Parameter | Value |
|---|---|
| Center Wavelength Range | Standard: 1029-1064, 400nm to 2000+nm available |
| Dispersion Rate | Standard: 50ps/nm, 10/100ps/nm available |
| Spectral Bandwidth | Typical: 1-10nm, others available |
| Diffraction Efficiency | >90% in free space |
| Fiber Coupling Efficiency | Typical: >70% into 6/125µm single mode fiber |
| Grating Length | 1mm to 30mm |
| Aperture Size | Standard: 2mm x 5-15mm |
| Stretched Pulse Length | Typical: 200-300ps |
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