Technical Information

TN2016-02: Surface Cosmetics of Laser Optics

The surface of optical components plays an integral part in their overall performance as scratches and digs on an optical surface not only increase scatter losses. They can also significantly reduce the coating adhesion as well as reducing the laser-induced damage threshold (LIDT) of a coating. Therefore, especially when optical components are required to withstand […]

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TN2016-01: Laser-induced Damage Threshold in the ultrashort Pulse Regime

Over the last several years much research has taken place to better understand the mechanisms that govern the laser-induced damage threshold (LIDT) in the ultrashort pulse regime. For pulses with a duration of 0.5ns and above, the LIDT mechanisms and the scaling of LIDT from a given pulse duration to another one are well understood […]

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TN2015-03: Virtually Imaged Phased Array (‘VIPA’) Etalons

When the creation of spatial dispersion is required, the most common solutions are to either use a prism or a diffraction grating. Another method is through the use of a modified solid or air-spaced etalon, a solution offering greater dispersive capabilities and insensitivity to polarisation. The modified etalon, shown in image TN-2015-03-1, is called a […]

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TN2015-02: Antireflection Coatings

Uncoated optical surfaces reflect a percentage of the incoming light with the exact amount dependent on the refractive index of the substrate material (see TN2014-03). In optical systems containing a large number of substrates, the various orders of reflection can thereby drastically reduce the contrast of any projected image. This is illustrated below in image […]

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TN2015-01: Calcium Fluoride CaF2

Calcium Fluoride (CaF2) is a crystalline material that occurs naturally as fluorspar. When occurring naturally, CaF2 is often strongly coloured due to the presence of colour centres. In pure form, CaF2 is a very useful material for a wide range of optical applications due to its wide transmission range from 130nm to 10µm for the […]

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Manx Precision Optics – Quality Policy

Manx Precision Optics Ltd. operates to BS EN ISO 9001:2015 offering high quality optical components, systems and integrated solutions to customers within the photonics industry. Manx Precision Optics Ltd. focuses on meeting customer requirements through the provision of sound advice. The company encourages all employees to participate in a process of continuous improvement and to […]

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TN2014-06: Etalons Part 1 – The Basics

TN2014-06: Etalons Part 1 – The Basics Etalons are optical components based on the principle of the Fabry-Perot Interferometer. They transmit light at periodic frequencies with very narrow bandwidth, allowing them to select or control and measure the wavelength of light in a variety of situations. They are commonly used in applications such as telecommunications, […]

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TN2014-05: What is Polarisation?

Polarisation – What is Polarisation? Polarisation is a fundamental property of waves. Transverse waves can have many polarisation orientations, whereas longitudinal waves like sound only have one. Optics generally deals with transverse waves, so these will be examined in more detail. In a transverse electromagnetic wave the electric and magnetic fields oscillate perpendicular to the […]

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TN2014-04: Clear and Useful Aperture

The clear aperture (CA) of a substrate is a key component of any optical specification. It specifies the area of the substrate surface over which the surface specifications are met. This Technical Note looks into the clear and useful aperture when the optical component is used under various angles of incidence.

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TN2014-03: Fresnel Reflectivity – Why are Anti-Reflection Coatings useful?

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TN2014-02: Properties of Optical Materials – Homogeneity and Striae

Properties of Optical Materials Homogeneity and Striae During the manufacturing process of optical substrate materials great care is taken by the manufacturer to ensure an equal cooling of the melt to avoid variations in the refractive index of the material. Any such variations are unwanted as they will negatively influence the transmitted wavefront of an […]

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TN2014-01: The Cleanroom Environment

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Manx Precision Optics – Part Descriptions

Very often, optical components are described by part numbers, but at MPO we thought about this and decided it would be better to have a part description that is meaningful in that it tells the reader what the optical component is supposed to do. Hence, we have devised our own part description system which is […]

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