DescriptionSpecifications
Models
Catalog PDF
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Helios is a CCD-based pump-probe transient absorption spectrometer, used for monitoring extremely short-lived optically absorbing states. The experimental time window ranges from femtoseconds to nanoseconds. The system is completely turn-key, including an optical unit and a PC, containing the data acquisition hardware and software. The system is designed to work with an amplified Ti: Sapphire femtosecond laser, such as the Spectra-Physics Spitfire Pro, to produce the spectral and kinetic data required for investigating photoexcitation events on the sub-picosecond and longer timescale. The system produces a 3-D Wavelength-Time-Absorbance data matrix in a form of an ASCII CSV file, which can be easily processed and displayed with our Surface Xplorer software.
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Click here to watch a video about the Helios solution. |
Applications |
Photophysics- Photochemistry
- Photobiology
- Cell Biology
- Material Science
- Nano Science
- Transient Spectrometry
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Typical Wavelength-Time-Absorbance Graph
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| Model | | | | |
| Spectral Range (nm) | 450-900 (350-900)3 | 450-1600 (350-1600)3 |
| Spectral Resolution (nm) | 2 nm | 5 nm |
| Time Window (ps) | 3200 (up to 8000)4 |
| Min. Step Size (fs) | 7 (2)5 |
| Temporal Resolution | 1.4 x Laser Pulse Duration (typical) |
| Temporal Chirp of Probe Pulse (fs) (1) | 200 |
| Max. Noise Level(2) | 0.0002 OD |
| Size (L x W x H)In. (mm) | 26x38X10 (660x965x254) |
| Weight [lb (kg)] | 100 (45) |
1. Value measured for chirp optimized alignment and is not applicable to all probe alignment variations
2. Corresponding to 3s of averaging per transient spectrum
3. With optional CaF2 continuum generator (item: HE-UV-CONTINUUM)
4. Optional extended optical delay line (items: HE-DELAY-6600 and HE-DELAY-8000)
5. Optional high resolution optical delay line (item: HE-DELAY-HIGHRES)
| | Model | Description |
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HE-DELAY-6600
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Extended Delay Line, Extends Helios Spectrometer to 6.6 ns Time Window
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HE-DELAY-8000
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Extended Delay Line, Extends Helios Spectrometer to 8 ns Time Window
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HE-DELAY-HIGHRES
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High Resolution Extended Delay Line, 2 fs Step Size, 3.2 ns Time Window
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HE-UV-CONTINUUM
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Continuum Generation Module, CaF2-based, 350 to 750 nm Spectral Range, Helios
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HE-VIS-3200
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Helios Transient Absorption Spectrometer, 450-900 nm, 3200 ps
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HE-VIS-3200-D
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HE-VIS-3200 with a second probe (reference) channel
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HE-VIS-NIR-3200
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Helios Transient Absorption Spectrometer, 450-1600 nm, 3200 ps
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HE-VIS-NIR-3200-D
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HE-VIS-NIR-3200 with a second probe (reference) channel
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