
January 12, 2010
- SPTS moves headquarters to Hawaii. More photothermal effects could be observed around. Check our new address, phone and fax.
June 20, 2009
- SPTS offers to test finished surfaces to reveal subsurface damage. Traces of extra absorption are mapped with raster scanning.
January 25, 2009
- Photonics West 2009 invited talk 'Photothermal common-path interferometry (PCI): new developments' gives more details on the PCI technology than ever. Find it in Proc. SPIE, Vol. 7193, 71930D (2009).
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Sensitivity better than 1 part per million with 1W laser source
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R&D systems |
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Industrial systems |
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Testing optics on demand
Optical materials expertise |
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| Objects that can be tested: |
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- AR, HR Coatings. Thin films
- low absorption tests (10 ppb resolution demonstrated) 
- 2D homogeneity tests
- surface defects and contamination
- Laser crystals: Nd:YAG, Nd:YVO4, Ti:Saphire, etc.
- 3D homogeneity tests
- transient and induced absorption
- thermal part of absorption only
- Nonlinear crystals: KTP, LBO, BBO, LiNbO3, LiTaO3, periodically-poled, etc.
- fast quality screening
- 3D homogeneity tests
- grey track characterization [KTP]
- induced absorption measurements [e.g. GRIIRA in LiNbO3]
- non-thermal response: photorefraction
- Composite objects: bonded optics, liquid crystals cells, etc.
- Semiconductors
- 3D homogeneity tests
- non-thermal responses: free carriers effects, photorefraction
- Liquid and gaseous samples
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