OZ Optics introduces new Variable Bandwidth Tunable Filter
OZ Optics has introduced a new tunable filter that has the ability to tune both the centre wavelength and the transmission bandwidth.
Two independently adjustable thin-film filters allow the setting of the lower and upper edges of the pass-band region. With this method, the pass-band can be tuned from 1 to 18 nm FWHM and the centre wavelength shifted by over 40 nm.
The transmission band features a flat-top profile, providing uniformly low losses and low PDL across the pass-band region, and high rejection ratios outside the pass-band. Devices can be custom made for wavelength regions of interest and can use either singlemode or polarisation maintaining fibres.
Two manual controllers to set the upper and lower pass-band regions, with an electrically controlled model due later this year. Applications include WDM testing, spectral filtering, spectral imaging or microscopy, and others.
For more information, please contact us.
New SpectralLED Tunable LED Light Source from Gamma Scientific
The new SpectralLED™ tunable light source from Gamma Scientific combines the output of 30 discrete LEDs – each having a different centre wavelength – to produce output that can be programmed to closely match virtually any illuminant source or the spectrum of any illuminant reflected by a target.
SpectralLED™ can sweep through wavelengths to simulate a scanning monochromator, but with the advantage of no moving parts. In addition to superior spectral resolution and accuracy, the SpectralLED™ also offers about 10x higher brightness than any competitive product. This allows measurements over a much larger, linear dynamic range, and is sufficient to illuminate virtually any detector at levels up to saturation.
A combination of DC constant current drivers, optical feedback, and thermoelectric cooling maintains the source’s high luminance accuracy in real time, allowing brightness to be varied directly (through drive current), rather than by pulse width modulation (PWM). This eliminates any flicker.
The SpectralLED™ will allow sensor, camera and system manufacturers to perform a wide variety of calibration and testing functions with a single instrument. Applications include smartphones and tablets, DSLR cameras, cinematography camcorders, diagnostic medical imaging, technical and industrial photography, or any OEM camera, sensor or detector application. White balance, spatial uniformity, defects, linearity, dynamic range, signal-to-noise, responsivity and ISO speed are specific tests the SpectralLED™ is ideally suited for carrying out.
For more information, please contact us.
Special EXFO test equipment catalogue for R&D/Manufacturing
EXFO has released a new catalogue covering their entire range of products for the fibre-based telecom engineer. Equipment for network engineers and R&D/Manufacturing is covered but, as Elliot Scientific only specialises in the latter, we have made available a special abbreviated version for download from our EXFO product pages.
Examples of the test equipment covered include:
IQS Series
Contact us now for more details. |
PSO Series
Handheld & Benchtop Systems
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New High-power Variable Ratio Beamsplitter or Attenuator from Spectral Optics
Spectral Optics has developed a completely new and innovative type of broadband variable Beamsplitter / Attenuator (VBSA) for high-power laser applications.
This unique VBSA offers the user continuous adjustment of the Reflection/Transmission (R/T) split ratio over a set bandwidth determined by the choice of beamsplitter material. These allow operation in and around the deep UV at 193 nm, the visible and near infrared, or the far infrared. Substrates currently available are:
- BK7
- Standard UV fused silica
- ArF-grade UV fused silica
- UV-grade CaF2
- IR-grade CaF2
- ZnSe
Both uncoated and coated versions are available for any laser wavelength and any polarisation.
- Continuous adjustment of R & T split ratio
- Uncoated option for high power laser applications
- Transmission range 20 to 80% typically, or over 99% if coated
- Apertures up to 12.5 mm (½”) as standard. 50 mm (2″) on request
Contact us to find out how your optical application could benefit from a VBSA.
Elliot Scientific 