Project Description

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.

AXIS-TRS: ULTRAFAST TIME-RESOLVED SPECTROMETER

Portable system with:

  • New PHOTONIS intensified streak tube

  • Available with S20, S25 and S1 photocathode
  • High Resolution Imaging Spectrograph

  • 12-bit CCD coupled by fiber optics

  • EMI-rugged electronics

  • Full calibration on a femtosecond laser

Applications:

  • Physical chemistry

  • Transient Absorption Spectroscopy

  • Photoluminescence Studies

  • Material Science

  • Raman spectroscopy

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:

photonis bilamellar streak tube

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)

TRS neon spectrum resolution

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

streak camera-normal-mode Normal sweep
The sweep crosses the whole screen and ends outside.
streak camera-timing-mode Timing mode
The s