Optical Spectrum Analyser
Yokogawa OSA Supports Compact Laser Validation
Integrated Optics uses Yokogawa’s AQ6373E optical spectrum analyser to detect weak spectral components, verify spectral purity and support quality control and development of compact visible and near-infrared laser sources.
Visible-range lasers are increasingly used in applications where spectral quality, stability and repeatability are essential. In microscopy, spectroscopy, flow cytometry, quantum technology and LiDAR systems, even weak unwanted spectral components can impair measurement accuracy and overall system performance. As a result, precise spectral characterisation is required throughout both development and manufacturing processes.
Lithuania-based Integrated Optics develops ultra-compact laser sources for scientific and industrial applications worldwide. The company’s MatchBox platform comprises a configurable family of integration-ready continuous-wave, multi-wavelength and pulsed lasers that combine optics, control electronics and thermal stabilisation in a housing roughly the size of a matchbox.
Detecting weak spectral components
One of the main challenges in laser development and production is identifying weak spectral modes and low-level components located close to the main laser signal. While significantly weaker than the primary emission peak, these signals can indicate reduced spectral purity or undesired operating behaviour. To support product development and quality assurance, Integrated Optics required an optical spectrum analyser with broad wavelength coverage, high resolution, strong sensitivity and high close-in dynamic range.
The company selected Yokogawa’s AQ6373E Optical Spectrum Analyser, which covers wavelengths from 350 nm to 1200 nm. According to Integrated Optics, the instrument is used for single-mode laser production, spectral filtering, component characterisation, quality inspection and new product development.
A key capability is its close-in dynamic range of approximately 60 dB, enabling engineers to distinguish weak spectral modes from the dominant laser peak. This allows more reliable assessment of spectral purity and helps verify that laser systems meet the performance requirements of their intended applications.
Supporting calibration and quality control
The analyser also supports measurements at relatively low optical input levels, simplifying production test setups. Integrated Optics combines advanced control electronics and thermal stabilisation within compact laser platforms, making accurate spectral calibration a critical requirement for maintaining performance across a wide temperature range.
Yokogawa’s analyser supports automated calibration and validation workflows through its connectivity options, helping to ensure fast and repeatable measurements. Its wavelength coverage also allows Integrated Optics to use a single measurement platform across a broad portfolio of visible and near-infrared laser products.
Broad wavelength range for laser development
According to the company, the AQ6373E enables rapid and repeatable measurements, supports the detection of weak spectral components, verification of spectral purity and evaluation of new laser designs. Integrated Optics says the system helps increase confidence that each laser meets demanding customer specifications while supporting both production quality control and the development of advanced compact laser sources for medical, scientific, industrial and quantum applications.
