March 2024

March 2024

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פסח כשר ושמח

קישור לחדשות בעברית

 

Links to Topics​​ 

Lasers

Optics

Cameras and Imaging

Detectors

Optomechanics

Security

דבר תורה

פורום משלי

Featured Company (InnoLas Laser)

❂Lasers

https://ilphotonics.com/wp-content/uploads/2024/02/FC-785-High-Power-Fiber-Coupled-Laser-System.png

CNI Optoelectronics Tech introduces the FC-785 High Power Fiber Coupled Laser System, which integrates a CW laser, fiber-coupled optics, laser power supply,​​ and temperature control into a single housing. This laser is coupled with a line generator at the fiber end. It has features of high power, perfect line uniformity, and continuously adjustable line width.

System features:

  • Output power from 10 to 50 W

  • Wavelength tolerance is 785 ± 0.5 nm

  • Spectral linewidth less than 0.2 nm

  • Optional lens angle of line generator

Line generator specifications:

  • Line angles: 30°, 45°, 60°, 90°

  • Luminance uniformity: 80%

 

Optics

Selecting the appropriate filter mount is as critical to​​ an​​ instrument’s performance as choosing the right filter.

That’s why Chroma Technology offers a wide range of mounting options to​​ enable​​ adding an optical filter to your system as easy as possible.

To help guide you through what’s available, here’s​​ a breakdown of some of the most common filter mounting options and the situations in which each works best.

Photo of filter mounts

Photo for Laser Drilling of High Temperature Hydrogen Electrolyzers

Hydrogen technologies are essential for a future economy utilizing renewable energy and depending less​​ on fossil fuels. A key component in cost-effective,​​ large-scale,​​ clean hydrogen production​​ is​​ the high temperature electrolyzer. This​​ is​​ the component that converts​​ water to clean hydrogen using a combination of thermal energy and electrical voltage applied between two electrodes.

For efficient conversion, porous electrodes must be used, which can be​​ produced​​ by drilling micro-holes into the electrode material. Laser drilling is​​ becoming a viable method for such a process, but rates must be scaled up to enable cost-effective production.​​ 

Holo/Or beam splitters can be used in combination with standard scanning optics to increase drilling rates by enabling simultaneous drilling of hundreds of holes.

A paper entitled, “Soluble and multivalent Jag1 DNA origami nanopatterns activate Notch without pulling force,” has recently been published.

The experimental setup for this research includes the following Chroma Technology components:

https://ilphotonics.com/wp-content/uploads/2024/03/Notch-Receptor-Activation-in-Situ-PLA.png

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Channel skip filters​​ are specialized components integrated into WDM add/drop modules.​​ These filters​​ are instrumental in refining the multiplexing process. They​​ exhibit narrow transitions from pass band to blocking band. This is a characteristic that minimizes the loss of channels while maximizing spectral efficiency.

These filters enable the selective addition or dropping of specific wavelength channels within​​ CWDM​​ and​​ DWDM​​ systems. By doing so, they facilitate the efficient utilization of available spectral bandwidth. This allows for the customization of channel configurations to meet the precise needs of any given project.

Iridian Spectral Technologies produces a suite of optical filters, including channel skip filters.

There are a variety of optical filter types available for use in optical systems. Two types are longpass and shortpass filters:

  • Longpass (LP): Longpass filters transmit wavelengths longer than the cut-on wavelength and block shorter wavelengths.

  • Shortpass (SP): Shortpass filters transmit wavelengths shorter than their cut-off point, blocking longer wavelengths (opposite of longpass filters).

Both longpass and shortpass filters play an important role in light control for various optical applications. They are fundamental tools for manipulating light in a controlled manner.

To learn more about the world of optical filters, download Chroma Technology’s comprehensive​​ Handbook of Optical Filters for Fluorescence Microscopy for more detailed information including a comprehensive glossary!

Graphs of Longpass and Shortpass Filters

Image for Structured Light Laser Beam Shaping

Structured light is a pre-determined intensity pattern that is projected at a certain Field Of View (FOV) to enable 3D-measurement of objects in the FOV. The way the reflected pattern is distorted by the object when sensed through a camera can be used to calculate the spatial position of each point in the FOV.

As there are typically few lasers that generate a 3D-structured light pattern useful as-is for structured light applications, some beam shaping is typically required.

Holo/Or offers​​ high-end, etched fused silica and polymer-on-glass diffractive optical components​​ for​​ diverse, structured-light applications in​​ many high-end markets. These include:

  • Large scale machinery automations,​​ such as LIDAR for autonomous farming equipment, self-driving forklifts, and automatic warehouse systems

  • Aerial and space-based mapping and collision avoidance

  • Precise wafer metrology

  • Medical analytic equipment

A paper entitled, “Quantification of cellular phototoxicity of organelle stains by the dynamics of microtubule polymerization,” has recently been published.

The setup for this research included a bandpass filter (ET642/80m)​​ from Chroma Technology.

Transmittance Graph for ET642 80m Filter

Photo of ‫Mid-Wavelength Infrared Filters

Raman spectroscopy examines the vibrational and rotational behaviors of the molecules within a material, providing essential data for identification and detection. This technique involves the use of laser light as a method of illumination. Given that the laser light used as the excitation source often outshines the Raman scattering by a substantial margin​​ ​​ often by as many as six orders of​​ magnitude​​ ​​ it becomes imperative to employ edge pass​​ filters​​ or​​ notch filters. These filters play a pivotal role in filtering out the laser light that has been Rayleigh scattered, while ensuring the passage of the Raman-scattered light that exhibits a shift towards either the longer (Stokes) or shorter (Anti-Stokes) end of the wavelength spectrum.

To learn more about the benefits of Raman edge filters, explore the detailed insights contained in educational​​ resources on Raman spectroscopy, available from​​ Iridian Spectral Technologies.

Understanding the terminology used to describe optical filters is key to using them effectively. Two terms that help define the operational range of a bandpass filter:

  • Center Wavelength (CWL): the arithmetic mean of the cut-on and cut-off of a filter

  • Bandwidth (FWHM): the width of the band from cut-on to cut-off  (also known as full width at half of maximum transmission)

Both​​ Center Wavelength and Bandwidth are crucial for accurately specifying the transmission characteristics of bandpass filters.

Chroma Technology is a leading manufacturer and OEM supplier of high performance optical filters used in a wide range of applications.

Graph of Center Wavelength & Bandwidth

 

Cameras & Imaging

Photo of ALEX-s camera

greateyes presents the groundbreaking​​ ALEX​​ platform for spectroscopy applications across the VUV, EUV, soft​​ X-ray,​​ and hard X-ray range. This camera is perfect for detecting even the faintest signal intensities, because ALEX unlocks unprecedented possibilities for measurements​​ of tomorrow.

ALEX combines cutting-edge, low-noise electronics and ultra-deep cooling technology in a sleek, compact camera design. Choose from multiple readout speeds supporting pixel rates from 50 kHz to 5 MHz. True 18-bit,​​ A/D conversion enables optimum performance and signal-to-noise ratio (SNR).

Read or download the ALEX-s data sheet.

To meet growing industrial demand, greateyes is excited to announce the addition of the ELSE-s 2k256 series to the ELSE camera family. This new series offers three sensors: FI, BI DD, and DD NIR.

With a narrow sensor format of 2048​​ ×​​ 256 pixels, this camera is ideal for spectroscopic applications requiring high spatial resolution along the dispersion axis, all while reducing costs and sensor surface compared to the 2048 × 512 pixels series. This camera is designed for Raman spectroscopy.

Features for the ELSE for UV VIS NIR include:

  • Wavelength range: 160–1100 nm

  • Pixel size: 15 µm x 15 µm

  • Image area: 30.7 mm x 3.9 mm