APPLICATIONS

Industrial OCT

EXALOS is the leading supplier of high-bandwidth and high-power SLEDs (EXS) for ophthalmic and medical OCT applications.

EXALOS is also offering high-performance driver boards for SLEDs (EBD) featuring ultra-low-noise and ultra-high current stability with zero long-term drift. EXALOS is also a key supplier of high-speed swept sources (ESS), for wavelength ranges from 800 to 1600 nm, and of ultra-low-noise balanced receivers (EBR).

EXALOS is the leading supplier of high-bandwidth and high-power SLEDs (EXS) for industriall OCT applications.

EXALOS is also offering high-performance driver boards for SLEDs (EBD) featuring ultra-low-noise and ultra-high current stability with zero long-term drift. EXALOS is also a key supplier of high-speed swept sources (ESS), for wavelength ranges from 800 to 1600 nm, and of ultra-low-noise balanced receivers (EBR).

O ptical coherence tomography has also been applied to several non-medical applications where accurate surface or thickness measurements are required in a non-invasive non-contact manner [1], [2]. For example, OCT allows for performing non-contact thickness measurements of multilayer coating stacks with a clear differentiation of all layers and their thicknesses.

OCT is especially suitable when real-time thickness measurements and monitoring are required, for example, as quality assurance tools in the optical industry. Such profilometry systems can be either time-domain or spectral-domain OCT systems and are comprised of an optical interferometer that is operated with a broadband SLED light source.

Typically, long-wavelength time-domain profilometry systems use EXALOS’ high- power and ultra-broadband SLEDs with optical bandwidths of 80 to 100 nm and output powers of 10 to 20 mW (EXS210045 and EXS210046, [3]), corresponding to a coherence length of 9 microns in air. Spectral-domain profilometry systems are using EXALOS’ broadband SLEDs in the 800 to 900-nm wavelength range.

Next-generation profilometry systems may also use swept sources with fast scan rates of 100-200 kHz, allowing for even faster and more accurate thickness measurements.

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EXALOS provides industry-leading, innovative products for industrial OCT

EXALOS PRODUCTS

SLED MODULES

EXALOS PRODUCTS

SWEPT SOURCES

Reference

[1] S. Lawman and H. Liang, HIGH PRECISION DYNAMIC MULTI-INTERFACE PROFILOMETRY WITH OPTICAL COHERENCE TOMOGRAPHY, APPLIED OPTICS, Vol. 50, Issue 32, pp. 6039-6048 (2011)

[2] P. Targowski, M. Gora and M. Wojtkowski, OPTICAL COHERENCE TOMOGRAPHY FOR ARTWORK DIAGNOSTICS, Hindawi Publishing, Laser Chemistry, Article 35373 (2006)

[3] EXALOS SLED Modules