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PRODUCT FOCUS OPTICAL FILTERS


Sensors and detectors Pyroelectric sensor


Ophir Photonics has launched the PE9- ES-C high sensitivity pyroelectric laser energy sensor, which measures laser energies as low as 50nJ and at high repetition rates up to 10kHz. It features a spectral range operating from 150nm to 12µm.


The PE9-ES-C is for low energy, short pulse YAG and harmonic generation applications, as well as low energy, long pulse lasers. It features an 8mm active aperture area and supports pulse widths to 20µs. A user-adjustable threshold prevents false readings. Users are provided with information about the laser being tested including pulse energy, average power, frequency, minimum and maximum values, missing pulses, and standard deviation. Pulse energies can be displayed numerically or in graphs. Up to 250,000 points of data can be stored in memory and can be sent to a computer for analysis and storage. The PE9-ES-C works with most Ophir smart


displays or PC interfaces. Each display features a ‘smart connector’ interface that automatically configures and calibrates the display when plugged into one of the company’s measurement sensors. www.ophiropt.com/photonics


Positioning equipment Stack type actuators series PA


Piezosystem Jena has launched stack type actuators series PA. These actuators, based on multilayer ceramics, are internally preloaded with a mechanical spring. Due to the high resonant frequency they can be used in applications such as scanning microscopy, laser fine tuning, micro manipulation or mirror positioning. The actuators can sustain high compressive forces or loads with tensile forces, and are characterised by their high stiffness of up to 85N/μm and large travel ranges up to 220μm. The series PA are available with a M3 thread top plate or ball tips. Vacuum and low temperature versions are also readily available. Furthermore, they can be combined with a sensor to achieve nanometre accuracy. The uniform diameter is 14mm. www.piezosystem.com


Close-up on filters


A round-up of the latest releases of optical filters and related products


Cilas filters are ideal for optical instruments analysing one specific wavelength, including instruments embedded on satellites or used in a laboratory.


on a single filter enhances fluorescence imagery and eases setup for a range of fluorophore applications. These filters are designed to be used with Techspec multi- band fluorescence bandpass filters for isolating wavelength ranges. www.edmundoptics.com/filters


Produced with dense coating technologies, these filters are suitable for harsh environments and have a high optical performance in terms of transmittance and rejection. They are available in diameters up to around 100mm, can be mounted in a filter wheel, or also can be sliced and assembled involving photolithography patterns. www.cilas.com


Deposition Sciences (DSI) has enhanced its capability to apply specialised, durable coatings onto complex shapes and multifaceted surfaces. Using DSI’s IsoDyn LPCVD (low pressure chemical vapour deposition), this method is suitable for coating almost all types of optical glass crystalline materials, ceramics, and metals. It is also suitable for coating a wide variety of unusual geometries, from ball lenses to dome windows, and from optical fibres to cold mirror reflectors. www.depsci.com


Edmund Optics’ Techspec multi-edge fluorescence dichroic filters are suitable for real time live cell analysis or high speed imaging applications. Featuring multiple cut-on wavelengths


www.electrooptics.com | @electrooptics


Laser Components has a range of optical filters including IR bandpass filters operating from 1µm up to 20µm. The company’s standard full width half maximum values are 1.1, 2, 4.3, 8 or 11 per cent. The IR longpass filters are


constructed from stacks of thin layers, allowing for typical transmission between 60-80 per cent in the pass band and 0.1 per cent or less in the cut- off region, which extends into the X-ray range.


The IR semiconductor filters are absorption filters that rely on the electronic band structure of semiconductors. They exhibit longwave pass characteristics and consist of coated, optically polished discs of semiconductors that are mounted in holders for protection. www.lasercomponents.co.uk


Pixelteq’s micro-patterned optical coatings help OEMs shrink electro-optic devices, deliver innovative optical


semiconductor lithographic processing techniques to apply small sized optical filters on either glass or semiconductor wafers with micrometre- scale precision. This enables implementation of integrated optics and on-chip functions including proximity and colour sensing, wavelength selection, multi-channel detection, and spectral imaging. www.pixelteq.com


Precision Glass and Optics has announced a line of precision optical thin film coatings for industrial applications. The company introduces a line of cost-effective thin film filters with anti-reflective,


heat resistant, dielectric and, infrared and visual transmission qualities. The optical coatings are designed for use in imaging, display, projection, scanning, defence, biomedical, aerospace, and other instrumentation. www.pgo.com


features, and scale to cost- effective volume production. The process combines high-end dichroic coating deposition and


Pro-Lite Technology represents Newport’s Stabilife filters and coatings, manufactured using Reactive Ion Plating (RIP) and Hybrid Plasma Deposition (HPD) processes for the deposition of metal oxide thin film optical coatings. Both processes yield highly dense, thin film coatings with extraordinary hardness, abrasion resistance, and adhesion to the substrate. The processes were developed at Newport’s Corion coating facility in Franklin, Massachusetts. www.pro-lite.uk.com


FEBRUARY 2014 l ELECTRO OPTICS 39


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