Transient Grating Spectrometer HARPIA-TG

  • Carrier diffusion coefficient in a matter of minutes!
  • Non-invasive measurement technique
  • Fully automated and computer controlled
  • Continuous setting of grating period
  • Sensitivity down to µJ/cm² excitation level
  • Advanced measurement and analysis software
  • Photoluminescence (PL) measurement option

Features

  • Carrier diffusion coefficient in a matter of minutes!
  • Non-invasive measurement technique
  • Fully automated and computer controlled
  • Continuous setting of grating period
  • Sensitivity down to µJ/cm² excitation level
  • Advanced measurement and analysis software
  • Photoluminescence (PL) measurement option

HARPIA-TG is a transient grating spectrometer for the measurement of carrier diffusion and lifetime. Measurements are based on the laser-induced transient grating (LITG) technique. This method enables simultaneous observation of non-equilibrium carrier recombination and diffusion by all‑optical means.

HARPIA-TG allows the characterization of electrically non‑conductive or non-fluorescent samples. It is suitable for semiconductors materials and derivatives, e.g., silicon carbide (SiC), gallium nitride (GaN), perovskites, organic and inorganic solar cells, quantum dots, and even complex nanostructures such as quantum wells.

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.

  • Transient grating spectroscopy
  • Single-wavelength transient absorption
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 sales@lightcon.com for details.
  2. SH (515 nm) or OPA-based probe is available upon request. Contact sales@lightcon.com for details.
  3. Depends on the excitation wavelength.
Model HARPIA-TG
Diffusion coefficient 0.1 – 50 cm2/s
Carrier lifetime 1 ps – 80 ns
Model HARPIA-TG
Physical dimensions (L × W × H)
730 × 420 × 188 mm

HARPIA-TG Transient Grating Spectrometer

Product datasheet.

Rev. 05/01/2023. Size 0.5 MB.

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