Light Conversion's HARPIA-TG is a transient grating spectrometer for carrier diffusion coefficient and lifetime measurements.

It operates as a non-invasive and non-destructive pump-probe spectrometer exciting the sample with laser interference and, subsequently, recording the transient grating – spatial refractive index modulation. A delayed beam probes the modulation decay, which corresponds to the carrier diffusion. By automated change of the grating period, the technique provides a detailed information on the dynamics of carrier propagation.

Coupled with CARBIDE or PHAROS laser with integrated optical parametric amplifier (I-OPA), the compact system is fully automated and computer-controlled via advanced measurement and analysis software. Thus, the user only needs to put the sample in the holder and start the measurement to obtain the diffusion coefficient in a matter of minutes.

Download datasheet here.

Applications

  • Transient grating spectroscopy
  • Single-wavelength transient absorption

Specifications:

Model HARPIA-TG
Grating recording wavelength 1) 340 – 560 nm
Probe wavelength 2) 1030 nm
Grating period 3) 1.15 – 15 μm
Pulse duration < 290 fs
Delay range Up to 8 ns
  1. Extendable to long-wave VIS/NIR. Contact This email address is being protected from spambots. You need JavaScript enabled to view it. for details.
  2. SH (515 nm) or OPA-based probe is available upon request. Contact This email address is being protected from spambots. You need JavaScript enabled to view it. for details.
  3. Depends on the excitation wavelength.