Raymetrics S.A.

Raymetrics has been manufacturing high technology solutions for studying the atmosphere for more than a decade. We design and build a range of laser-based remote sensing instruments (LIDARs) which are suitable for a variety of purposes, including academic uses (such as scientific studies of the atmosphere), commercial uses (such as dust trackers for use in open pit mines), and operational uses (such as our Raman depolarization LIDAR optimized for volcanic ash detection). We have sold our products all across the world, including in the USA, India, China, Africa, South America, South East Asia and Europe. The company has built up an extensive client list, which includes such prestigious organizations as the European Space Agency (ESA), the UK Met Office, Meteo France, and the German Aerospace Centre (DLR).

Company details

32 Spartis, Metamorfosis , Athens , 14452 Greece

Locations Served


Business Type:
Industry Type:
Monitoring and Testing - Meteorological Monitoring
Market Focus:
Globally (various continents)
Year Founded:
$1,000,000 US - $10,000,000 US

Raymetrics has been in operation since 2002, making us probably the first atmospheric LIDAR company in the world. Back then, the only people using aerosol LIDARs were researchers. We therefore come from a background in LIDAR science - and to this day we maintain strong links with the academic community. Our key scientific advisor is Professor Alex Papagiannis from the National Technical University of Athens (NTUA), who was in 2015 elected President of the International Coordination Group for Laser Atmospheric Studies (ICLAS) - the most important atmospheric LIDAR organization in the world. Alex's protégé is Dr George Georgoussis, Raymetrics' founder and our current CEO.

The reason a small company based in Greece has been able to do all of this is because of the quality of our products. Raymetrics LIDARs are extraordinary because of our unusual approach to product development - we follow the science instead of the usual commercial trend of producing smaller-faster-cheaper equipment. Our aim is always to produce instruments with the power, functionality and accuracy demanded by academics, combined with the robustness and ease-of-use required by commercial clients. A Raymetrics LIDAR is the most powerful tool of its type on the market and, because of our dedication to LIDAR science, the most accurate.  

This aproach has led to Raymetrics becoming the foremost aerosol LIDAR company in the world, and a trusted brand among the LIDAR community and beyond.

Why Raymetrics?
Experience: Raymetrics has been in the commercial LIDAR market longer than most other manufacturers, with backscatter LIDARs available commercially since 2002, Raman LIDARs since 2004 and 3D scanning LIDARs since 2008.

Knowledge: Raymetrics has a background in LIDAR science, having helped to bring the technology from academia to the marketplace. Our close ties to the scientific community allow us to benefit from new developments, leading to designs which have continually evolved and improved.

Partnerships: We have a strong association with the European LIDAR Network (EARLINET), ensuring quality and compatibility. Raymetrics has more LIDARs in this network than any other manufacturer. We are also an official Associated Partner of the Aerosols, Clouds, and Trace gases Research InfraStructure Network (ACTRIS) and its follow-up, ACTRIS II. This is a European Project aimed at integrating European ground-based stations equipped with advanced atmospheric probing instrumentation for aerosols, clouds, and short-lived gas phase species.

Standards: Raymetrics LIDARs conform to all necessary standards and requirements. Aviation systems conform to ISO 28902-1:2012 Air Quality - Environmental Meteorology Part 1: Ground-based remote sensing of visual range by LIDAR. Eye-safe systems are according to the European Standard on Laser Safety EN 60825-1:2008. The company is certified as being in compliance with standard ISO 9001:2008 (support provided by CORALLIA). All Raymetrics LIDARs are built to EARLINET recommended standards for LIDAR design, including a purpose-built depolarization unit designed specifically for EARLINET’s +/-45 degree test for calibrating the depolarization constant, specialist tools for performing the Telecover Test for accurate alignment, etc.

Prestigious Client List: Our client list includes many prestigious institutes and organizations.

Reputation: Raymetrics has a reputation for delivering exceptional products which perform to the levels we specify.

International Presence: Raymetrics exports its products all over the world, with systems in North America, Africa, Europe, South America and Asia - see map.

In-house Software and Hardware Development: All optical designs, mechanical designs and software are developed in-house, meaning that the company understands all elements of LIDAR function and integration. We build LIDARs and only LIDARs.

Customization: Raymetrics LIDARs are designed to be modular. This allows users to adapt the specification to exactly their needs without incurring additional costs. It also allows for simple upgrades.

Transparency: Raymetrics has a policy of being open about the capabilities and limitations of its products. We provide the full specifications and original manufacturer names of all components. We advocate transparency because we only use high quality components. We do not provide 'black boxes' with hidden specifications.

LIDAR stands for LIght Detection And Ranging. LIDAR is analagous to RADAR, only uses light from a laser instead of radiowaves to remotely sense distant objects. Because the wavelength of light is small, LIDARs can detect very small objects.

The LIDAR Technique

An aerosol LIDAR works by emitting a laser beam into the atmosphere. The laser light is scattered by particles, with some “backscattered” to a telescope placed alongside the laser. Because the speed of light is known, the distance to the particle layers can be determined from the time taken for the light to return.

More advanced LIDARs can also take advantage of the properties of the returned light. From these, certain characteristics about the atmosphere can be determined, such as optical depth and particle identification (volcanic ash, smoke, marine aerosols, dust).

LIDARs plot every laser pulse individually. This means that energy per pulse is of the highest importance, since the more energy a laser pulse has, the further it will reach into the atmosphere before being scattered away. Stacking or integrating data can improve data quality but cannot do much for the range. This is why Raymetrics LIDARs use some of the most powerful industrial lasers on the market.

Uses of LIDAR
LIDARs have been around since the 1960's, but only recently have the applications for this technology begun to become more widely known. Raymetrics has been in operation since 2002, providing LIDARs initially to the academic community. Over the past few years however, clients have increasingly come to Raymetrics from operational and commercial sectors.

Probably the most well-known atmospheric LIDAR is the wind Doppler LIDAR. These are different from the aerosol type LIDARs produced by Raymetrics. Wind LIDARs detect movement of particles, whereas aerosol LIDARs detect the particles themselves.

Aerosol LIDARs are increasingly becoming standard technology, particularly in the aviation and meteorology sectors. Ceilometers are in effect basic model LIDARs, with small telescopes and low-energy lasers in order to detect the cloud base. LIDARs can however provide much more information (e.g. incoming cloud base, fog detection, and remote visibility measurement). 'ISO 28902-1:2012 - Ground based remote sensing of visual range with LIDAR' shows that LIDAR is now a standard technique for measuring visibility. LIDAR is also able to solve specific issues such as absolute identification of volcanic ash, along with providing ash layer altitudes.

As time goes on, the applications for atmospheric LIDARs are rapidly increasing and Raymetrics, as the first atmospheric LIDAR company in the world, now finds itself at the forefront of a new and booming industry.