DescriptionSpecifications
Models
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The Spectra-Physics® Unison™ ultrafast amplifier system builds upon Spectra-Physics proven leadership in the ultrafast arena and combines it with high power and high energy amplification technologies. The result is the first single system optimized for femtosecond pulses at both terawatt class powers at 10 Hz and mJ pulse energies in the kHz regime. Unlike other terawatt systems on the market today, all Unison system components are manufactured by Spectra-Physics so you get complete compatibility and unparalleled single point of contact for service support. The Unison amplifier’s modular design results in a versatile system that can be easily configured (and re-configured) to suit your needs—including upgrading from existing Spitfire® systems.
By offering multi-beam outputs, the Unison ultrafast amplifier system can power multiple state-of-the-art applications and experiments simultaneously, thereby optimizing your capital equipment acquisition. While the terawatt output beam is performing experiments such as VUV spectroscopy, multiphoton and above threshold ionization, or high order harmonic generation, the kHz beam line performs standard time resolved spectroscopy experiments such as CARS, pump-probe spectroscopy, or THz generation. Furthermore the high intensity output can be used to extend measurements of the kHz line into even higher intensity regimes for validating models.
With dual beam outputs that deliver 0.5 TW at 10 Hz and 3.5 mJ at kHz repetition rates, the Unison ultrafast laser system is the ideal tool for a wide variety of high power and high energy applications.
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Applications |
VUV spectroscopy- Multiphoton ionization
- Above threshold ionization (ATI)
- High order harmonic generation
- CARS
- Pump-probe spectroscopy
- THz generation
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Specifications
| Unison 40 | Unison 100 |
| Amplified fs Outputs | Dual: High Energy 10 Hz and High Repetition Rate 1 kHz |
| 10 Hz Output1 |
| Pulse Width2, 3, 4 | <40 fs | <100 fs |
| Pulse Energy2 | >20 mJ | >50 mJ |
| Repetition Rate | 10 Hz |
| Energy Stability5 (shot-to-shot) | <3.0% rms |
| Spatial Mode | TEM00 (M2 <1.5 on both axes) |
| Contrast Ratio6, 7 | >10,000:1 pre-pulse
>100:1 post-pulse |
| Transform Limit9 | <1.5 x transform limit |
| Polarization | Linear Horizontal |
| Pump Laser | Quanta-Ray® |
| 1 kHz Output1 |
| Pulse Width2, 3, 4 | <35 fs | <100 fs |
| Pulse Energy2 | >3.5 mJ |
| Repetition Rate | 1 kHz minus 10 Hz pulses picked for 10 Hz amplifier |
| Energy Stability5 | <0.75% rms over 8 hours |
| Spatial Mode | TEM00 (M2 <1.3 on both axes) |
| Tunability8 | 780–820 nm | 750–840 nm |
| Contrast Ratio6, 7 | >1000:1 pre-pulse
>100:1 post-pulse |
| Transform Limit9 | <1.5 x transform limit |
| Polarization | Linear Horizontal |
1. Due to our continuous product improvements, specifications are subject to change without notice. The specifications only apply when operated with recommended Spectra-Physics seed and pump lasers.
2. Applies at peak wavelength (800 nm).
3. A Gaussian pulse shape (0.7 deconvolution factor) is used to determine pulse width (FWHM) from autocorrelation signal as measured with Newport PulseScout® autocorrelator.
4. For other pulse widths, please contact Spectra-Physics.
5. Applies at peak wavelength: % rms with near Gaussian distribution over 1,000 shots.
6. Defined as the ratio between peak intensity of output pulse to peak intensity of any pulse that occurs >1 ns before the output pulse. For higher contrast ratio, please contact Spectra-Physics.
7. Defined as the ratio between peak intensity of output pulse to peak intensity of any pulse that occurs >1 ns after the output pulse. For higher contrast ratio, please contact Spectra-Physics.
8. For wavelength extension through SHG, THG, FHG or OPA, please contact Spectra-Physics.
9. Assuming Gaussian pulse shape.