Hollow-Core Fiber Compressor
The hollow core fiber compressor spectrally broadens high-energy femtosecond input pulses by nonlinear interactionwith a noble gas of adjustable gas pressure inside a hollow fiber. Ultra-broadband chirped mirrors compress the white light pulses after the fiber, and the increased spectral width supports shorter pulse durations than the original input. Effectively, the device compresses the input pulses temporally by increasing their spectral bandwidth. Our device draws on extensive expertise in the generation of intense few-cycle pulses for attosecond research and combines high transmission with unique ultra-broadband compression. Besides pulse compression the extremely broadband fiber output addresses also state-of- the-art spectroscopy experiments. | |
Key Product Features Input Pulse Duration: up to 60 fs (as short as possible) Input pulse energy: 0.5-2 mJ (optimum: 1-1.5 mJ) Repetition rate: 1-10 kHz Typical compression factor: 5-6 x Fiber transmission: up to 70% White light spectral bandwidth: • 270-1000 nm (achievable with perfect input) • 400-900 nm (with commercial 25 fs laser) Extremely broadband fiber output for spectroscopy Footprint: 300 x 60 cm2 | Customization Options Active beam pointing stabilization unit Variable spectrum selection Flexible dispersion management |
| Model I | Model II |
Bandwidth
| 500 - 1050 nm | 450 - 1000 nm |
Supported pulse duration | < 4 fs* | < 3 fs* |
Reflectancce per bounce | < 99% | < 99% |
Angle of incidence | 5° and 19° | 5° and 19° |
Fiber Output Spectrum
The extremely broadband fiber output spectrum (before the spectral mirror shaping) facilitates spectroscopy experiments from 400 nm up to the NIR at 1200 nm.
Ultra-broadband Chirped Mirror Technology
Our double-angle chirped mirrors are a key component of the hollow core fiber compressor. Building onextensive experience in ultrafast coating design these mirrors provide unprecedented broadband compression with the proven capability to produce pulses with <4 fs duration. Custom solutions for specific spectral coverage and selection are available.
References
[1] Broadband 7-fs diffractive-optic-based 2D electronic spectroscopy using hollow-core fiber compression
X. Ma, J. Dostál, T. Brixner Optics Express 24, 268867 (2016)
[2] Synthesized Light Transients
A. Wirth, M. Th. Hassan, I. Grguraš, J. Gagnon, A. Moulet, T. T. Luu, S. Pabst, R. Santra, Z. A. Alahmed, A. M. Azzeer, V. S. Yakovlev, V. Pervak, F. Krausz, E. Goulielmakis Science 334, 195 (2011)
[3] Intense 1.5-cycle near infrared laser waveforms and their use for the generation of ultra-broadband soft-x-ray harmonic continua
A. L. Cavalieri, E. Goulielmakis, B. Horvath, W. Helml, M. Schultze, M. Fieß, V. Pervak, L. Veisz, V. S. Yakolev, M. Uiberacker New Journal of Physics 9, 242 (2007)
[4] Powerful 170-atoosecond XUV pulses generated with few-cycle pulses and broadband multilayer optics
M. Schultze, E. Goulielmakis, M. Uiberacker, M. Hofstetter, J. Kim, F. Krausz, U. Kleineberg New Journal of Physics 9, 243 (2007)