Project Description

AXIS-TRS: Ultrafast Time-Resolved Spectrometer

AXIS-TRS is an all-in-one system that can sweep a 550-point spectrum with a time resolution of 1 ps (measured at FWHM) and a with 1/2 nm spectral resolution.

AXIS-TRS: ULTRAFAST TIME-RESOLVED SPECTROMETER

Stand-alone system with:

  • High-end PHOTONIS bilamellar streak tube
  • Available with S20, S25 and S1 photocathode
  • High Resolution Imaging Spectrograph

  • -10°C cooled 16-bit CCD coupled by fiber optics

  • EMI-rugged electronics

  • Internal computer with remote control

  • Full calibration on a femtosecond laser

Applications:

  • Femtochemistry

  • Picosecond Transient Absorption Spectroscopy

  • Photoluminescence Studies

  • Material Science

  • Raman spectroscopy

AXIS-TRS SPECIFICATIONS

STREAK TUBE

Photonis bilamellar family: These sealed tubes use bilamellar optics to provide an ultrafast temporal resolution whilst maintaining excellent spatial resolution.

photonis bilamellar streak tube

SPECTROMETER

Acton SP-2358 Imaging Spectrograph

  • 300mm focal length
  • f/3.9 aperture
  • Interchangeable triple grating turret
  • Wavelength accuracy: +-0.02 nm
  • Repeatability: +-0.05 nm
  • Drive step size: 0.005 nm

SPECTRAL RESPONSE OF THE SYSTEM

Depends on combination photocathode / grating:

  • S20 and 150 gr/mm grating blazed at 300nm : 150-900nm
  • S20 and 150 gr/mm grating blazed at 500nm : 200-920nm
  • S25 and 150 gr/mm grating blazed at 800nm : 380-950nm
  • S1 and 150 gr/mm grating blazed at 800nm : 300-1400nm
Tube spectro response spectrometer

SPECTRAL RESOLUTION

Photocathode length (X):  18 mm

Number of spectral points in a streaked image:  625

Spectral range of a streaked image:  380, 190, 92 nm (with grating: 150, 300, 600 gr/mm)

Spectral resolution:  0.60, 0.30, 0.15 nm (with grating: 150, 300, 600 gr/mm)

TRS neon spectrum resolution

TIME RESOLUTION

Number of time-resolution units in screen (Nt):  675

Available Ranges (T):  200 ps to 1 ms

Single-shot time resolution (δt): δt = ΔT / Nt = ΔT / 675 * Limited to 1 ps

TRIGGER

Standard Single-Shot Sweep Units Optional Laser-Triggered Sweep Unit
Trigger pulse Electrical Femtosecond laser
Requirements 5-10 V in 50Ω, 50-200 ns duration 100 μJ @ 800 nm
Maximum repetition rate 100 Hz 5 kHz
Jitter  < 15 ps RMS ~ 1/2 ps (depending on the properties of the laser)

READOUT