

EOS — Nanosecond Transient Absorption Spectrometer
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EOS is a unique (Patent No.: US 7,817,270 B2) broadband pump-probe nanosecond Transient Absorption Spectrometer designed to work with a wide variety of pulsed lasers. A complete turn-key system, EOS measures transients with sub-ns time resolution over an easily adjustable time window. At any time, the EOS time resolution can be improved to femtosecond by integrating it with HELIOS, our broadband pump-probe femtosecond transient absorption spectrometer.
Key Features
- Automated alignment of the pump beam
- Computer-controlled switching between UV/VIS, NIR, and SWIR modes.
- Supports computer-controlled translating sample holder.
- Supports pump beam shutter.
- Supports motorized filter wheel for automated pump intensity control.
- The user specified the initial step size, time window, and the total number of time steps.
- Pseudo-random scanning of the pump-probe delay times averages out low-frequency noise.
- Real-time histogram plotting to show the sampling distribution over the time window.
| Models | Specification |
|---|---|
| Type | Nanosecond transient absorption spectrometer |
| Time Range | Sub-nanosecond to ~1 ms (electronically delayed probe) |
| Time Resolution | ~600 ps (IRF, laser-dependent) |
| Probe Source | Built-in pulsed broadband fiber laser (white-light) |
| Probe Spectral Range | 350–900 nm (VIS) / extendable to NIR–SWIR |
| Pump Source | Customer ns laser / OPO, or Ti:Sa / Yb fs amplifier |
| Detection | Fiber-coupled spectrograph, full transient spectra per shot |
| Synchronisation | Electronic pump-probe delay (no mechanical stage) |
Source: Ultrafast Systems manufacturer datasheet. Download the brochure (PDF) from the Documents tab for full details.
Product Family: Transient Absorption Spectrometers (4 variants)
| Product | SKU | Size | Clear Aperture | Operating Wavelength | |
|---|---|---|---|---|---|
| KRONOS — Educational Microsecond Flash Photolysis Spectrometer |
| — | — | — | Contact |
| HELIOS IR — Mid-IR Femtosecond Transient Absorption Spectrometer |
| — | — | — | Contact |
| EOS — Nanosecond Transient Absorption Spectrometer Current |
| — | — | — | |
| HELIOS — Femtosecond Transient Absorption Spectrometer |
| — | — | — | Contact |

