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NLOT, Ltd
Expertise & Solutions to Nonlinear Coherent Sources

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Introduction to NLOT


   1. Presentation & Company's Goals
   2. Consulting & Expertise Features
   3. Overview of other Metrological Services
   4. Overview of Products

1. Presentation & Company's Goals

NonLinear Optics Technologies (NLOT) is a consulting & sales company founded by a consortium of academic scientists skilled in various areas of fundamental and applied optics. Its intended aim is to serve the Optics and Optical Physics community as well as industrial and other fields of science using optical technologies, by providing their skills and experience in the conception, analysis, optimization and design of nonlinear laser sources based on parametric conversion processes in nonlinear passive or active media.

NonLinear Optics (NLO) has a wide field of applications, ranging from fundamental aspects (understanding the physics and dynamics of light-matter interactions) to various practical applications in today's life (production and use of tunable coherent radiation throughout the whole electromagnetic spectrum). Our purpose is to help end-users (institutional laboratories, private companies, ...) non familiar with Nonlinear Optics to design appropriate coherent optical sources on demand. Our services include scientific consulting on the fundamental aspects (including computational optimization tasks)  as well as practical design and implementation of NLO devices (based on second/sum/difference frequency generations, optical parametric amplification or oscillation, OPA/OPO).  From our experience as physicists, achieving high performance devices requires many subtleness not delt with in standard specialized text or data books. Calling for relevant expertise can save end-users from time-consuming efforts.

Our skills range from material physics (crystal growth, solid-sate ) to laser physics and nonlinear light-matter interactions from the continuous-wave (cw) to pulsed regimes (nanosecond to femtosecond). Contrary to a commercial company that merely distribute components and devices, our consortium is composed of active scientists willing to be closer to the end-users needs and demands in optical technologies.

2. Consulting & Expertise Features

The initial stages of the design of NLO-based devices usually consist in

  • determing the adequate NLO components critical specifications (crystals, optics, resonators, anti-reflection and reflective coatings...) given the pump power and beam parameters requirements and material properties.
  • eventually designing custom components (such as Walk-off compensated monolithic structures - 2N-OCWOC structures especially usefull for the UV range) aimed at enhancing the nonlinear effects.
  • estimating the output laser power and evaluate deleterious effects affecting their performance (e.g., thermally-induced effects, optical damage breakdown...)
All these conceptual tasks require an accute knowledge of the  physical basics together with elaborate specific computational toolkits acquired in our own experiences. We provide our consulting and computational services for such tasks ! The practical realization of devices will be however left to the end-users: we do not deliver ready-to-use devices for the moment. However upon request NLOT can eventually take part in the assembling and testing if necessary.

3. Overview of other Metrological Services

We can also perform a variety of measurements to determine some properties of materials:
  • measurements of physical and optical properties of materials (linear and nonlinear absorption, thermo-mechancical properties, thermal conductivities, linear optical dispersion, linear and nonlinear susceptibilities...)
  • optical element machining, polishing etc...
  • optical coatings
Some of these services are subcontracted to a network of confident and trustful providers we have experienced.

4. Overview of Products

Besides consulting & services, NLOT also distributes some optical components from many trustful providers.

  • NLO crytals for use in the whole optical spectrum (from the UV to the mid-infrared), among which newly developped lithium-containing mid-IR chalcogenide nonlinear crystals such as LiInS2, LiInSe2 and isotype compounds that are promising for mid-IR OPOs. Other exotic semi-conductor compounds for the deep mid-IR, hardly available in the market, will be made available in the future.
  • Monolithic walk-off compensated structures (2N-OCWOC structures for the deep UV or deep mid-IR)
  • Active laser crystals (Nd:YAG, Nd:YVO4, etc..., Ti:sapphire....)
  • standard optical components such as lenses, windows, polarization optics (waveplates, prisms...) and other custom products.


Just state us your requests: we shall try to satisfy your needs!

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