Yokogawa optical spectrum analyser supports ultra-compact visible-laser validation and quality control at Integrated Optics

Amersfoort, The Netherlands – 24 August 2026

Visible-range lasers are used in applications where spectral quality, stability and repeatability are critical. In microscopy, spectroscopy, flow cytometry, quantum technologies and LiDAR, even weak unwanted spectral components can affect measurement accuracy and system performance. Accurate spectral characterisation is therefore essential throughout product development and manufacturing.

Integrated Optics, a laser and photonics manufacturer based in Lithuania, develops ultra-compact laser sources for scientific and industrial applications worldwide. Its MatchBox® platform is a configurable family of integration-ready continuous-wave, multi-wavelength and pulsed lasers, combining optics, control electronics and thermal stabilisation in a compact matchbox-sized enclosure.

A key challenge for Integrated Optics is detecting weak spectral modes and other low-level components close to the main laser signal. Although much weaker than the principal emission peak, these components may indicate unwanted laser behaviour or reduced spectral purity. To support both product development and production quality control, the company required an optical spectrum analyser offering wide wavelength coverage, high wavelength resolution, sensitivity and close-in dynamic range, together with fast and repeatable measurements.

Integrated Optics selected Yokogawa`s AQ6373E Optical Spectrum Analyser, which covers wavelengths from 350 nm to 1200 nm. The instrument is used for single-mode laser production, spectral filtering, component characterisation, quality inspection and new product development. One of its principal advantages is an approximately 60 dB close-in dynamic range, enabling engineers to distinguish weak spectral modes from the dominant laser peak and assess spectral purity with greater confidence. This helps verify that each laser meets the performance requirements of its intended scientific or industrial application.

The AQ6373E’s sensitivity also supports measurements at relatively low optical input levels, simplifying test arrangements during production. Integrating this level of optical performance into such a compact laser platform presents significant engineering challenges. Integrated Optics develops intelligent laser systems with advanced control electronics and thermal stabilisation, making precise spectral calibration essential to maintain performance and stability across a broad temperature range. Yokogawa’s optical spectrum analyser supports these requirements by enabling automated calibration and validation workflows through its extensive connectivity options, helping ensure fast, repeatable measurements and consistent product quality. Its broad wavelength range allows Integrated Optics to use a single platform across a wide portfolio of visible and near-infrared laser products, reducing measurement complexity.

“Yokogawa provides a highly capable, telecom-grade instrument whose performance is exceptionally well suited for laboratory laser measurements,” says Evaldas Pebreza, CEO of Integrated Optics. “We benefit from the reliability expected of telecommunications equipment while also achieving the resolution and sensitivity required to characterise far more demanding laser sources.”

Using the AQ6373E, Integrated Optics can perform fast, accurate and repeatable measurements, identify weak spectral components, verify spectral purity, and evaluate new laser designs. For Integrated Optics, the main benefit is greater confidence that every laser meets demanding customer requirements. Yokogawa’s wavelength coverage, close-in dynamic range and measurement reliability support both efficient production quality control and the development of ultra-compact advanced laser sources for medical, scientific, industrial and quantum applications.

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Photo (source Integrated Optics, 2026): Using Yokogawa spectrum analyzer, Integrated Optics can perform fast, accurate and repeatable measurements across the wavelength range required for its laser products

About Yokogawa Test & Measurement

Yokogawa has been developing measurement solutions for 110 years, consistently finding new ways to give R&D teams the tools they need to gain the best insights from their measurement strategies. The company has pioneered accurate power measurement throughout its history, and is the market leader in digital power and optical spectrum analyzers. Yokogawa measuring instruments are renowned worldwide for their high levels of precision, quality, durability, and service support. Meet the precision makers at https://tmi.yokogawa.com.

About Yokogawa

Yokogawa provides advanced solutions in the areas of measurement, control, and information to customers across a broad range of industries, including energy, chemicals, materials, pharmaceuticals, and food. Yokogawa addresses customer issues regarding the optimization of production, assets, and the supply chain with the effective application of digital technologies, enabling the transition to autonomous operations. Founded in Tokyo in 1915, Yokogawa continues to work toward a sustainable society through its 17,000+ employees in a global network of 126 companies spanning 60 countries. For more information, visit www.yokogawa.com