Flag of Germany About us and our History

In 1990 Dr. Walter Luhs created the idea of experimental laser for the education of students at universities and related educational bodies while he lead the partially owned company MEOS. The picture on the left shows the vintage picture of the first Nd:YAG experimental laser of 1991. In a short time an open frame Helium Neon laser followed and a few experiments related to fiber optics were added.

First Nd:YAG by Dr. Walter Luhs in MEOS
First Nd:YAG by Dr. Walter Luhs in MEOS

 Nd:YAG by Dr. Walter Luhs as of 2022Nd:YAG Laser design as of 2022

 Nd:YAG by Dr. Walter Luhs as of 20222016: Blue diode pumped Pr:YLF Laser

 Nd:YAG by Dr. Walter Luhs as of 20222017: LE-1300 Iodine Raman Laser
MEOS LogoLUHS Logo Despite the market success, MEOS went out of business in 2007. However, Dr. Walter Luhs took over and continued as Engineering Office the development and construction which finds its culmination with a portfolio of more than 40 exciting experiments as a result of technical proficiency and market feedback. He took the opportunity to revise and modernize the meanwhile outdated equipment to serve in the field of practical education in Photonics and Laser technology worldwide.
To achieve highest, yet affordable quality we develop, produce and market our products in Germany.
We are located in the Black Forest in Germany next to France and Switzerland, right in the precision triangle, where the Swiss precision, the French elegance and German Engineering meets. The entire mechanical, electronic and optical design are made under one roof. Based on our drawings we source from supplier, which we know since decades and providing us a sustainable quality. Our main tasks are the assembling of the components to complete experimental systems, the function and quality check and last but not least the provision of comprehensive manuals including the basic theories.
To help protecting the environment we banned plastic as far as possible from packing. For the electronics design we take care to use high efficiency power converter and supplies to save energy. For the new updated mechanical design, we significantly reduced the amount of aluminum without loosing performance and stiffness.
International research labs began to notice the lab quality of our devices. With 2015 began the period of scientific cooperations where one deserves to be mentioned. Based on our LM-0600 HeNe Laser Gyroscope with some modifications, the group around Mercedeh Khajavikhan could verify their theoretical predictions about Non-Hermitian polynomials published in Nature 2019 .
In the past we already gained a lot of experience with optical pumping of Nd:YAG crystals. The only drawback of Nd:YAG laser systems are the invisibility of the pump as well as laser radiation. From 2015 onwards we studied the potential of blue diode pumped laser crystals and succeeded in 2016 to develop a new experimental laser, the Blue diode pumped Pr:YLF Laser. Encouraged by this work, we also started to evaluate the potential of green emitting laser "pointer". We immediately noticed the single mode emission at fairly high powers of up to 100 mW. This encouraged us, to substitute the HeNe laser in those experiments where interference effects are the main subject. Of course we still supply HeNe laser as option.
Scanning promising pump transitions for this wavelength of 532 nm, we stopped by at the Ruby crystal and molecular Iodine. Since we already had experience of optical pumping of Iodine molecules from the early academic career, we could create in 2017 two new experiments, the "PE-1600 Iodine Molecular Spectroscopy" and "LE-1300 Iodine Raman Laser"[1] . In 2022 we have been awarded by the German Physical Society DPG with the 2022 Teaching Award.
Although optical pumping of the Ruby crystal with a green laser "pointer" was of high interest, we abandoned this idea. However, we succeeded by using a violet (405 nm) emitting laser diode. This work enabled us to create two new exciting experiments in 2018, the "PE-1500 Ruby Excited Lifetime & Spectroscopy" and "LE-0200 Ruby Laser". Sine we have been the first to demonstrate a diode pumped continuous (cw) Ruby laser, we published a series of three peer previewed scientific publications: [1] ,  [2] ,  [3] .
Following the tendency to add quantum optics to the content of the curriculum in schools, we launched in 2023 a class 1 teaching laser, the "LE-1600 Ruby Laser RL4000". Although a powerful (1W) violet (405 nm) emitting pump laser diode is used, the translucent encapsulation and micro processor based monitoring and shut-off facilities guarantee a true class 1 laser.

What comes next?

We still have a bunch of ideas in the pipe line. Ideas are borne and boosted in scientific as well as didactically projects and discussions. We appreciate your comments and suggestions: Contact us

 Nd:YAG by Dr. Walter Luhs as of 2022
2018: LE-0200 Ruby Laser
 Nd:YAG by Dr. Walter Luhs as of 2022
2023: Class 1 Violet diode pumped Ruby Laser