June 2023

June 2023

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קישור לחדשות בעברית

 

Links to Topics​​ 

Lasers

Optics

Cameras & Imaging

Detectors

Electronics

Security

Coffee​​ at​​ Even​​ Crazier​​ Prices

Featured Company (Cinogy)

 

Lasers

Photo of IXION 193

The IXION 193 is Xiton’s 193.368 nm all solid-state, single frequency source for quality control within the leading edge technologies of the semiconductor industry. It is well proven in countless applications like spectrometer calibration, interferometry, and material testing.

The center wavelength of the system is customizable in a range between 185 and 194 nm and can be configured for a fixed wavelength at the time of order. It can be tuned to the exact wavelength of ArF Excimer lasers that are typically used in this field. This laser reveals TEM00 beam profile and a coherence length of more than 4 meters.

Optics

In the context of IR sensing, optical filters are widely employed to control the transmission of IR radiation based on their cut-off wavelengths. The cut-off wavelength determines the boundary between the transmitted and blocked spectral regions, defining the spectrum of infrared radiation that the filter allows to pass. This is paramount for several reasons.

Edge filters, also known as edge pass filters, are an important type of optical filter used in IR sensing applications. These filters are defined by a cut-on or cut-off slope, which helps the selective reflecting or transmitting of one band of wavelengths, while reflecting or transmitting the second band. Edge filters can be customized to work with a range of wavelengths, from the UV to LWIR.

Band pass filters​​ are another essential optical filter widely employed in IR sensing applications. These filters allow a specific range of wavelengths to pass through while blocking the rest. This selectivity is highly advantageous for isolating specific emission lines or bright lines in an IR LED or other sources of infrared radiation. In gas analysis applications, for example, band pass filters are crucial in isolating the IR wavelengths associated with specific gas emissions or absorption lines, enabling accurate and efficient detection.

Iridian Spectral Technologies​​ specializes in developing​​ bandpass filters​​ and​​ edge pass filters.

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Photo of ‫Mid-Wavelength Infrared Filters

Various factors can affect the performance of filters used in IR sensing. These include the cut-off wavelength, the angle of incidence, energy levels and states, and absorption lines.

The​​ cut-off wavelength​​ for longpass and shortpass filters defines the boundary between the transmitted and blocked spectral regions.

An increased​​ angle of incidence​​ may shift the passband toward shorter wavelengths, affecting the filter’s ability to pass or block certain IR wavelengths.

Different molecules have unique​​ absorption lines​​ that can be used to identify and quantify them.

Iridian Spectral Technologies specializes in creating custom-made filters to meet your specific needs.

Coherent beam combining (CBC) is a technique that allows the output power of multiple fiber lasers to be increased without compromising the beam quality. Diffractive optics are optical elements that use interference and diffraction to manipulate the phase and amplitude of light waves. Diffractive optics can offer several advantages for CBC, such as absolute angular accuracy, compact size, scalability, and integration of multiple optical functions in a single surface.

For more information,​​ contact Holo/Or.

Image for coherent beam combining

 

❂Cameras & Imaging

Photo of setup including greateyes GE 1024 256 BIUV1

Researchers have successfully demonstrated the use of metasurfaces as a superior way to focus extreme ultraviolet (EUV) light. The paper, titled​​ Extreme Ultraviolet Metalens by Vacuum Guiding,” published in the journal Science Advances, highlights the use of holes in a silicon membrane to efficiently vacuum-guide light around the 50-nm wavelength.

The greateyes detector (GE 1024 256 BIUV1), optimized for EUV wavelengths, was an integral part of the experimental setup which the research team operates at the TU Graz. The camera is very compact and has a sensor optimized for the highest sensitivity in the EUV spectral range.

❂Detectors

In a research project led by the University of Geneva, ID Quantique (IDQ) has contributed to the development of a quantum key distribution (QKD) system based on integrated silicon photonics that can transmit secure keys at unprecedented speeds. The goal of this project is to show how the use of integrated photonics will provide compactness, low cost, and ease of integration as well as inroads to mass production.

In this project, demonstrations rely on the use of Superconducting​​ Nanowire,​​ Single-Photon​​ Detectors (SNSPDs) and InGas​​ Single-Photon Avalanche Diodes (SPADS), a range of products available from IDQ.

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CNI Optoelectronics Tech offers a variety of​​ photoelectric detectors, including biased photoelectric detectors and amplified photoelectric detectors. These devices can measure parameters such as pulse width, rise and fall time, repetition rate, period, noise, etc.

The photoelectric detector has two measurement modes: free space and optical fiber interface. Each detector is equipped with an attenuation device, which can be installed or removed according to the power of the incident light.

In a short​​ video​​ Félix Bussières, VP Research and Technology at ID Quantique (IDQ),​​ discusses two approaches to photon-number resolution and ultrafast detection using Super-Conducting Nanowire Single-Photon Detectors (SNSPDs).​​ The first approach (parallel design) is based on several interleaved pixels connected in parallel with a single readout line. This approach allows for PNR and ultrafast detection > 100 Mcps. The second approach (multi-pixel design) involves 416 independent pixels operated and read out indepen-dently. This enables even faster detection rates > 1 Gcps and PNR that is robust to long pulse durations.