Featured Articles
Developing Mid-IR Fused Fiber Couplers
By G. Stevens and T. Woodbridge, Gooch & Housego PLC

Increasing use of fiber lasers and fused fiber technology for industrial, medical, and sensing applications has led to the development of fused fiber devices in all-fiber system architectures. A fiber laser system that uses fiber components is able to become more compact, more robust, and may be assembled quickly by splicing all of the components together. This article demonstrates the results of Gooch & Housego’s efforts to develop single-mode fused couplers in a ZBLAN fiber in the mid-IR range.

Spotlight On Spectroscopy
OEM Spectroscopy Components And Devices

BaySpec is capable of manufacturing and designing a vast array of gratings, OEM spectrometers, and imaging spectrographs for a range of desired specifications. Other components and devices available from BaySpec include light sources, detectors, cameras, and other high-performance customized solutions.

BaySpec Inc. | Pittcon Booth 1536
InGaAs Linear Photodiode Arrays

The LBD/LSB Series from Sensors Unlimited comprises high-resolution, linear InGaAs photodiode arrays, generally used for monitoring optical performance of S-, C-, and L-band channels in DWDM networks, and for agricultural sorting, biomedical analysis, thermal imaging, and industrial process control.

Sensors Unlimited - UTC Aerospace Systems | Pittcon Booth 4102
Choosing The Most Suitable Laser Wavelength For Your Raman Application

Even though the Raman shift of any material is only related to the material’s specific chemical structure and is independent of the excitation wavelength, different wavelengths have their specific strengths and weaknesses. So how does one select a laser excitation wavelength for specific applications? 

B&W Tek, Inc. | Pittcon Booth 1220
Infrared (IR) Arrays For NIR Spectroscopy

LASER COMPONENTS offers a series of IR arrays designed for IR spectroscopy applications, such as biomedical analysis. The IG22 array series consists of 256 rectangular pixels made of extended InGaAs with a TE2 cooler, and is manufactured with an element size of 30 µm x 250 µm and a pitch of 50 µm.

Laser Components USA, Inc.
Raman Spectroscopy Of Pigmented Human Tissue In The Shortwave Infrared

This method applies shortwave infrared Raman spectroscopy at a wavelength above 1 µm to the examination of darkly pigmented human tissue, and it significantly subdues any spectral disturbances from fluorescence effects in the visible realm.

EMCCD Camera

The new Falcon III from Raptor Photonics is an EMCCD – GEN III camera based on e2v’s next-generation CCD-351 back-thinned 1″ sensor offering 1 MP resolution with 10 μm square pixels.

Raptor Photonics Limited
Focus On Pittcon 2017
Pittcon 2017 | March 5 to 9 | Chicago, IL

Pittcon offers a unique opportunity to get a hands-on look at the latest innovations and to find solutions to laboratory challenges. The technical program offers the latest research in more than 2,000 technical presentations covering a diverse selection of methodologies and applications. Pittcon also offers more than 100 skill-building short courses in a wide range of topics and the once-a-year chance to network with colleagues.

How To Select A Spherical Lens

Ranging from convex to concave, and bestform to aspheric, any lens selection must be made with consideration for its purpose, as well as its required quality. This white paper reviews singlet spherical lens shapes and guidance on deciding the best lens characteristics for each application.

Advances In CMOS Image Sensors And Associated Processing: Part 1

New Canon technology has exploited a large 35 mm full-frame CMOS image sensor with spatial sampling of 1920 (H) x 1080 (V) to acquire a distinctively large photosite of 19 um x 19 um, which enabled development of an HD camera with unprecedented sensitivity.

Theory And Measurement Of The Modulation Transfer Function (MTF)

A Modulation Transfer Function (MTF) is appropriate for lenses of all qualities, and can be calculated from lens design data which enables theoretical and actual performances to be compared. The MTF measurement has almost completely replaced older visual tests.

Featured Multimedia
5 Considerations When Selecting A High-Speed IR Camera

Vincent Farley with Telops offers insight into what to consider before selecting a high-speed infrared camera.

Bulletin Board
Nanopositioning Stages Help Create And Characterize Laser-Written Waveguides Inside Silicon

Silicon photonics circuits are gaining importance in new techniques for testing and production of SiP-related technologies for the future of computing and data communications. A crucial part in the waveguide characterization is the measurement of the refractive index with a customized Mach-Zehnder-type phase-shift interference microscope. Download the full article for how nanopositioning stages can help create and characterize the laser-written waveguides inside silicon.

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