April 2024

April 2024

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קישור לחדשות בעברית

 

Links to Topics​​ 

Optics

Cameras and Imaging

Spectroscopy

Light Sources

Detectors

Security

Featured Company (InnoLas Laser)

Optics

Image for Laser Beam Shapers for Harsh Conditions

Laser beam shapers used in the aerospace and defense industries often need to endure harsh environmental conditions with high a Laser Damage Threshold (LDT). At the same they must maintain high reliability, meet high-performance requirements, and provide excellent efficiency.

Holo/Or develops and manufactures monolithic, robust diffractive optical elements and micro-optics that meet the unique requirements of various applications including defense and aerospace high-power applications.

For more information,​​ contact Holo/Or.

Light transmission is important when it comes to optical filters, but effective blocking levels and ranges should be utilized as well to ensure optimal performance.​​ The​​ essential filter characteristics​​ regarding blocking:

  • Blocking Level: A measure of the out-of-band attenuation of an optical filter over an extended range of the spectrum. The​​ vertical axis​​ is defined in units of optical density.

  • Blocking Range: The range of wavelengths over which an optical filter maintains a specified blocking (attenuation) level.

To learn more about the world of optical filters,​​ read​​ Chroma Technology’s comprehensive​​ Handbook of Optical Filter for Fluorescence Microscopy.

Graph of Blocking Level and Blocking Range

Photo of thin film polarizers

Thin film polarizers (TFPs)​​ are optical components designed to selectively transmit or reflect light of a specific polarization state. These​​ components​​ are made by depositing thin layers of dielectric materials onto a substrate, creating a highly efficient polarizing filter. TFPs can enhance the contrast and resolution of optical systems, making them ideal for use in various electronic devices.

Some key applications include:

  • Liquid crystal displays (LCDs)​​ 

  • Optical communication systems

  • Laser systems​​ 

  • Spectroscopy and microscopy​​ 

  • Aerospace and defense​​ 

CRYSTECH Inc. is a global supplier thin film polarizers (TFPs) and more.

High laser power can be more easily and affordably achieved using multi-mode lasers, compared to single-mode lasers. This makes multi-mode lasers attractive sources for integrators developing high-power laser beam machines. However, due to their multimode nature, such a laser suffers from a non-uniform beam profile, which is also often unstable and changes depending on the laser power level and temperature.

beam shaping diffuser is a type of optical component that can generate a homogenized, pre-designed intensity distribution from any input. This is typically done by duplicating and overlaying the input beam on itself in a controlled manner, resulting in a smooth shape laser beam with a desired intensity distribution.

For more information, contact Holo/Or.

Image of smooth shape laser beam

Image for Opto-Control of Cell Functions

Discover the impact of a filter in the recently published paper, entitled “Unleashing Precision and Freedom in Optical Manipulation: Software-Assisted Real-Time Precision Opto-Control of Intracellular Molecular Activities and Cell Functions.”

From the paper’s abstract:​​ 

“Here, we present an adaptable and interactive optical manipulation platform that integrates laser scanning, chemical sensing, synchronized multi-laser control, adaptable target selection, flexible decision-making, and real-time monitoring of sample responses. This software-assisted real-time precision opto-control (S-RPOC) platform facilitates automatic target selection driven by optical signals while permitting user-defined manual delineation.”

The experimental setup for this research includes an ET642/80m filter from Chroma Technology.

Our planet is connected by communications technology. Right now, around 66.2% of people worldwide use the internet. To account for the ever-increasing demands of the industry, we need more efficient technologies. Optical interconnects fit that bill.​​ 

Applications of fiber-optic communication​​ include:

  • Data​​ centers

  • Telecommunications​​ networks

  • FTTx (fiber to the x)

  • Metropolitan​​ networks

  • Submarine​​ cables

Optical interconnects are fascinating tools with unlimited potential.​​ To learn more, download​​ Iridian Spectral Technologies’s An Overview of Optical Interconnect Technology.

Image for Optical Filters for Telecom-Datacenter

Image of Sample Chamber and Measurement Setup

Recently, the following paper was published: “Diffusion of DNA on Atomically Flat 2D Material Surfaces

From the paper’s abstract:

Our experiments directly show that, upon binding to a hBN surface, a DNA molecule retains its ability to diffuse along the surface. Further, we show that the magnitude and direction of such diffusion can be controlled by the DNA length, the surface topography, and atomic defects. By fabricating a narrow hBN ribbon structure, we achieved pseudo-1D confinement, demonstrating its potential for nanofluidic guiding of biomolecules. Our work sets the stage for engineering 2D materials for high-throughput manipulation of single biomolecules and their applications in nanobiotechnology.

The Chroma filter used in the experimental setup is a ZET532/640m.

Waveplates​​ are optical devices that alter the polarization state of light as it passes through them. They are commonly used in various optical systems, such as lasers, cameras, and spectrometers.

There are several​​ types of waveplates available, each suited for specific applications:

  • Zero-Order Waveplates

  • Multiple-Order Waveplates

  • Achromatic Waveplates

CRYSTECH Inc. is a global supplier of laser optics​​ ​​ (including​​ waveplates),​​ AlexandriteKTP, GTR-KTP, RTP and KDP Q-SwitchesNd:YAGNd:YVO4, and CTH:YAG crystals, thin film polarizers (TFPs),​​ and more. 

Photo of waveplates

 

Cameras & Imaging

Photo of ALEX-i camera

The​​ ALEX-i​​ is a full-frame, deep cooling, scientific CCD camera from​​ greateyes​​ for your imaging applications in the VUV, EUV, as well as soft and hard X-ray range.

Features of the ALEX-i include:

  • Cutting-edge, low-noise electronics

  • Ultra-deep cooling technology

  • Compact camera design

  • Multiple readout speeds (50 kHz to 5 MHz)

  • True 18-bit AD conversion for maximum dynamic range and SNR

LOTTE from greateyes​​ utilizes scientific-grade, back-illuminated CCD sensors for the detection of EUV, VUV, and X-ray signals. The spectral bandwidth covers photon energies between 5 eV and 20 keV. The user can also choose from a variety of sensor formats — small to large —​​ with pixel sizes from 13–26 µm.​​ LOTTE utilizes ultra-deep thermoelectric cooling (down to -100 °C) and has a massive, true 18-bit AD conversion for maximum dynamic range.

Read or download the datasheets for the imaging (LOTTE-i) or spectroscopy (LOTTE-s) models.