AXIS-QVS: Compact Time-Resolved Spectrometer
AXIS-QVS is a user-friendly instrument that can sweep a 150-point spectrum with a time resolution of 5 ps (FWHM) and a spectral resolution of 0.5 nm.
Portable system with:
Applications:
All-In-One Instrument:
AXIS-QVS is a fully integrated instrument composed of a spectrometer, a streak tube and a CCD camera. Light from the experiment is sent through the spectrometer and dispersed on the photocathode. The spectrum is then swept and recorded with the CCD camera.
AXIS-QVS SPECIFICATIONS
STREAK TUBE
This streak camera uses a new generation of streak tubes based on the 75-year night vision heritage of PHOTONIS.
The tube is built according to high quality standards and features:
- Picosecond time resolution
- High spatial resolution
- Integrated input slit (no need for a mechanical slit)
- High-gain internal microchannel intensifier
- Ruggedized for harsh environment
It can be built with different cathodes and matched with a spectrometer grating for optimal throughput:
SPECTRAL RESOLUTION
Number of spectral points in a streaked image: 135
Spectral range of a streaked image: 315, 155, 75 nm (with grating: 150, 300, 600 gr/mm)
Spectral resolution: 2, 1, 0.5 nm (with grating: 150, 300, 600 gr/mm)
TIME RESOLUTION
Number of time-resolution units in screen (Nt): 275
Available Ranges (ΔT): 1 ns to 1 ms
Single-shot Time Resolution: δt = ΔT / Nt = ΔT / 275 * Limited to 5 ps
TRIGGER
| Standard Sweep Unit | MHz Sweep Unit | |
| Trigger pulse | Electrical | Electrical |
| Requirements | 5-10 V in 50Ω | 5-10 V in 50Ω |
| Maximum repetition rate | < 100 Hz | 2 MHz |
| Jitter | < 15 ps RMS | < 15 ps RMS |
READOUT
Readout type: CCD Digital camera
CCD chip size: 1024×1392 pixels; 7 mm x 9 mm
Digitizer: 12 bit
Coupling to streak tube: 1.8:1 Fiber optic taper
OPERATION MODES
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Normal sweep The sweep crosses the whole screen and ends outside. |
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Timing mode The sweep always remains in the screen. It is used to synchronize the streak camera to the experiment. |
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Focus mode The slit image is positioned at the center of the screen. The sweep trigger is disabled. This mode is used to align the experimental setup and to adjust the incident light level. |
SOFTWARE
AXIS-QVS is operated from a USB link to a PC running Windows .
The instrument comes with a CD containing all required software to:
- Control whole system and acquire images
- Control the laser system (optional)
- Plot lineouts along time axis or space axis
- save image in different formats
GENERAL
Electrical input
Universal AC, 110-240V, 50-60 Hz
Certification
CE
Tests and Calibration
Before shipping, each system is tested on a femtosecond laser at the Advanced Laser Light Source (Canada)
Installation and Training
A qualified engineer is sent to your laboratory to install the system and train users
OPTIONS
Photocathode
S20, S25, and S1 cathodes are available
Grating
Standard system comes with a 150 gr/mm grating. Available gratings are 150 gr/mm, 300 gr/mm, 600 gr/mm and 1200 gr/mm. They come with different blaze wavelength (300nm, 500nm, 800nm, 1µm).
Kit for Transient Absorption Spectroscopy
This optional kit includes a synchronized white light source, special optical system and software plugins to allow AXIS-QVS to perform Transient Absorption Spectroscopy.
Blanking circuits
With the blanking option, streak tube is blocked during the time the signals sweeps back to its start position. This feature is required when the optical signal lasts longer than the sweep range.
