photothermal, photo-thermal, photo thermal, thermal lensing, photothermal spectroscopy, low absorption, absorption, photorefraction, spectrophotometer, spectroscopic, analysis, spectroscopy, optical absorption tests, crystal growing, absorption measurements, nonlinear crystals, optical coatings, ppln crystals, ktp crystals, bbo crystals, lbo crystals, laser crystals, coating quality, testing, control, measurements, induced absorption, induced transparency, organic dyes, absorption spectra, crystal, crystals, ar coating, coatings, optical damage, hr coating

stanford photo-thermal solutions is a manufacturer of multifunctional analytical instruments for testing optical coatings, thin films, nonlinear and laser crystals for weak absorption losses, homogeneity, lifetime estimates, etc. instruments measure absorption with sensitivity better than 1ppm, possess high spatial and temporal resolution, insensitive to scattering. instruments can record 3d maps of absorption and monitor crystals for induced absorption and organic dyes for induced transparency, detect initial stage of optical damage.