20 September 2021

ORS-Mini: ultrastable laser with 2 Hz linewidth as optical reference in field applications

Menlo Systems

Menlo Systems, leading supplier of precision photonics instruments, just released the ORS-Mini – an ultrastable laser with less than 2 Hz linewidth. Designed as a compact 19" rack module for field applications, the laser frequency stability of <5x10-15 in 1 s (MADEV) and phase noise of -94 dBc/Hz (at 10 kHz offset) are best in class.

The system’s centerpiece is a 5 cm high-finesse ULE cavity, which has been licensed from the National Physical La-boratory (UK). The cubic cavity design provides the lowest vibration sensitivity reported to date and enables a rigid cavity mounting, allowing for mobile use of the apparatus.

Caption: ORS-Mini ultrastable laser

The system operates fully autonomously, can be intuitively controlled via touchscreen, and is remotely accessible via a net-work connection. The laser system is available at 1542 nm and at 1064 nm.

The ORS-Mini has been conceived as ultrastable optical reference intended for terrestrial use and is ideally suited for applications in quantum computation, as a source of ultralow-noise microwaves for radar systems, as a flywheel in optical clocks, for frequency dissemination via optical fibers, or in various spectroscopic experiments.

About Menlo Systems:
Precision in Photonics. Together we shape light.

Menlo Systems GmbH is a leading developer and global supplier of instru-mentation for high-precision metrology. The company with headquarters in Martinsried near Munich is known for its Nobel Prize winning optical fre-quency comb technology. With subsidiaries in the US and China and a global distributor network, Menlo Systems is closely connected to its customers from science and industry. The main product lines are optical frequency combs, time and frequency distribution, terahertz systems, ultrafast and ul-trastable lasers, and corresponding control electronics. Besides standard production, Menlo Systems develops and manufactures custom made solu-tions for laser-based precision measurements.

About NPL:

NPL is the UK’s National Metrology Institute, providing the measurement capability that underpins the UK's prosperity and quality of life.

From new antibiotics to tackle resistance and more effective cancer treatments, to secure quantum communications and superfast 5G, technological advances must be built on a foundation of reliable measurement to succeed. Building on over a century’s worth of expertise, our science, engineering and technology provides this foundation. We save lives, protect the environment and enable citizens to feel safe and secure, as well as support international trade and commercial innovation. As a national laboratory, our advice is always impartial and independent, meaning consumers, investors, policymakers and entrepreneurs can always rely on the work we do.

Based in Teddington, south-west London, NPL employs over 600 scientists. NPL also has regional bases across the UK, including at the University of Surrey, the University of Strathclyde, the University of Cambridge and the University of Huddersfield's 3M Buckley Innovation Centre.
For more information visit: www.npl.co.uk  

NPL is also working on space deployable versions of the cubic cavity with application to future space-based ultra-stable lasers and optical clocks. For further information on space-customised or space-qualified cavities, please visit https://www.npl.co.uk/products-services/time-frequency/optical-reference-cavity-for-space-applications.

About Optica

Optica (formerly OSA), the society advancing optics and photonics worldwide, is dedicated to promoting the generation, application, archiving and dissemination of knowledge in the field. Founded in 1916, it is the leading organization for scientists, engineers, business professionals, students and others interested in the science of light. Optica’s renowned publications, meetings, online resources and in-person activities fuel discoveries, shape real-life applications and accelerate scientific, technical and educational achievement.

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Menlo Systems GmbH

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Phone: +49 89 189166 0

Fax:     +49 89 189166 111



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Menlo Systems, Inc.

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Phone: +1 973 300 4490

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