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  • Compact Photonic Chip System Brings Miniaturized Atomic Clocks Closer to Reality

    April 14, 2023
    Compact Photonic Chip System Brings Miniaturized Atomic Clocks Closer to Reality

    Researchers have developed a groundbreaking compact photonic chip system that paves the way for miniaturized strontium atomic clocks. The achievement has significant implications for atomic technologies, as miniaturization could lead to a range of benefits in applications such as GPS and communication systems.

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Laser Calculators

Six commercial lasers in operation, showing the range of different colored light beams that can be produced, from red to violet. From the top, the wavelengths of light are: 660nm, 635nm, 532nm, 520nm, 445nm, and 405nm.

Laser Beam and Dot Relative Brightness Comparison by Wavelength

Wavelength to Color Spectrum

Wavelength to Color Converter with RGB Values

In April 2015 the HARPS laser frequency comb was installed on the HARPS planet-finding instrument on the ESO 3.6-metre telescope at the La Silla Observatory in Chile after completion of an intense first commissioning phase. The increase in accuracy made possible by this new installation should in future allow HARPS to be able to detect Earth-mass planets in Earth-like orbits around other stars for the first time. This picture shows a HARPS spectrum of the light wavelengths from the two laser frequency combs that that were tested.

Wavelength to Frequency Calculator

By carefully engineering the geometry of a micrometer-scale, ring-shaped optical resonator, researchers at NIST produced pairs of entangled photons (particles of light) that have two very different colors or wavelengths. Light from a pump laser (purple regions in the resonator) generates one photon in each pair at a visible-light wavelength (red patches in and around resonator); the other photon has a wavelength in the telecommunications (near-infrared) part of the spectrum (blue patches). From the perspective of quantum communication, these pairings combine the best of both worlds in an optical circuit: The visible-light partner can interact with trapped atoms, ions, or other systems that serve as quantum versions of computer memory, while the telecommunications wavelength member of each couple is free to propagate over long distances through an optical fiber network. Credit: S. Kelley/NIST
Physics

Optical Resonators: Principles, Types, and Applications in Modern Technology

April 5, 2023
•
By 405nm
Optical resonators, sometimes referred to as optical cavities, are essential components in various modern technologies, from…
The new polarimetric hardware installed on the MIRC-X optical bench at CHARA. The top panel shows the Air Spaced Waveplates assembly (1) and motor control boxes (2) in relation to the MIRC-X instrument during initial testing in 2019 November, where calibration was conducted with a pair of linear polarizers (3).
Optics

Understanding Air Spaced Waveplates: Applications and Principles

April 3, 2023
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By 405nm
The field of optics has seen significant advancements in recent years, and one of the essential…
Schematic of an optical photonic-memory cell.
News

All-optical Memory Circuit with High-Speed Operation Developed for Future Signal Processing and Computing Systems

April 1, 2023
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By 405nm
Scientists have developed a new all-optical memory circuit that could revolutionize the way we process signals…
Bathymetric map of the ocean floor showing the continental shelves and oceanic plateaus (red), the mid-ocean ridges (yellow-green) and the abyssal plains (blue to purple) Credit: NOAA
News

Researchers Develop High-Efficiency Blue Laser for Advanced Bathymetric Lidar Ocean Exploration

March 29, 2023
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By 405nm
A team of researchers has recently announced the successful development of a high-efficiency, nanosecond pulsed blue…
Airborne Lidar Bathymetric Technology-High-resolution multibeam lidar map showing spectacularly faulted and deformed seafloor geology, in shaded relief and coloured by depth
Industrial

What is Airborne Lidar Bathymetry? A Comprehensive Overview

March 28, 2023
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By 405nm
Airborne lidar bathymetry, a cutting-edge technology that combines light detection and ranging (lidar) with bathymetric principles,…
A 3D printer of the laser powder-bed fusion type, in action. Laser powder-bed fusion adds successive layers of metal powder and then uses a laser to melt each layer into place on the part being created. Image: NIST / KTH.
News

Synchrotron Experiments Illuminate Path to Enhanced Metal 3D Printing

March 27, 2023
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By 405nm
In an exciting development, scientists from the U.S. National Institute of Standards and Technology (NIST), the…
Petcube Play 2 Wi-Fi Pet Camera with Laser Toy & Alexa Built-In
Pointers | Reviews

Best Cat Laser Toy In 2023

March 26, 2023
•
By 405nm
With so many options available on the market, it can be difficult to decide which one…
Experimental results on grasping of target micro-objects by using multiple micro-fingers. The proposed method is general in the sense that any rod-shaped micro-objects that are trappable can be used as fingers, and it also allows users to add more micro-fingers or remove redundant ones (A) Two S-pombe yeasts are trapped as the micro-fingers, which are then coordinated to grasp and rotate a target micro-object. (B) Three S-pombe yeasts are tapped to form a three-fingered micro-hand for grasping and manipulation tasks. (C) Three micro-rods are trapped as micro fingers.
News

Laser-Actuated Micro-hand Achieves Dexterous Manipulation at Micron Scale

March 24, 2023
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By 405nm
Scientists at Tsinghua University in Beijing have made a breakthrough in the field by developing a…
Amplification of GaSb-Based Diode Lasers in an Erbium-Doped Fluoride Fibre Amplifier
News

Fiber-Based Amplification of Mid-Infrared Diode Lasers for Improved Medical and Communication Technologies

March 23, 2023
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By 405nm
Scientists have demonstrated for the first time the fibre-based amplification of mid-infrared diode lasers in the…
According to a recent poll, 1 in 8 American adults who have tattoos regret getting one. FDA regulates laser devices used for tattoo removal. Learn safe and effective ways to have your tattoo removed.
Industrial

How Do Tattoo Removal Lasers Work?

March 23, 2023
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By 405nm
This article will provide an in-depth, educational examination of the science behind tattoo removal lasers, exploring…
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Image of laser speckle
News

First Watt-Level Self Frequency Doubling (SFD) Laser at 540nm with Nd:LCB Crystal Utilizing Energy Level Splitting

SEM (Scanning Electron Microscope) image of a commercial laser diode with its case cut away
Diodes

From Lasers to Light-emitting Diodes and Everything in Between

A supercontinuum generated by focusing energy from an 800 nm femtosecond laser pulse into a yttrium aluminium garnet crystal. Broad spectrum photons are emitted within the crystal.
News

Ultra-Flat Supercontinuum Generation Demonstrated By Researchers Using All-Fiber Er/Yb Laser

Image of laser speckle
Optics | Physics

What is laser speckle?

Ophtalmic Excimer Laser for refractive surgery - "MEL80" (Carl Zeiss Meditec AG/Germany)
Uncategorized

Femtosecond Laser Cataract Surgery: A Comprehensive Guide

405nm Blue Laser Pointers
Laser Safety | Pointers

Are 405nm Lasers Dangerous?

Laser Safety | Pointers

The Dangers of 532nm Laser Pointers

Image of Comet Hyakutake shown in blue, was taken with an ultraviolet "Woods" filter image that shows the distribution of scattered ultraviolet radiation from hydrogen atoms in the inner coma.
Physics

What is the longest wavelength light capable of ionizing a hydrogen atom in the ground state?

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  • Professor Dino Jaroszynski's experimental setup to investigate plasma photonic structures at the Central Laser Facility, Rutherford Appleton Laboratory. Credit: University of Strathclyde
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  • Mode conversion to demonstrate OAM conservation: (a) LG12,0 ; signal beam transmitted in air; (b) signal beam coupled with the filament through the cloud chamber. (c) Using the tilted lens method, the initial signal is converted to its corresponding HG45∘ mode. (d) The same mode conversion is done for the signal beam transmitted through the cloud chamber. For the last conversion, the filament was completely block.
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    Breaking Through the Clouds: Laser Filaments Enable Free-Space Optical Communication in Adverse Weather Conditions

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Ultraefficient on-Chip Supercontinuum Generation from Sign-Alternating-Dispersion Waveguides.

A Quantum Leap in Efficiency: 3 Orders of Magnitude Improvement in On-Chip Supercontinuum Generation

Posted on March 16, 2023
Researchers have achieved a groundbreaking advancement in the field of ultraefficient on-chip supercontinuum generation, paving the way for the development of portable and mechanically stable medical imaging devices, chemical sensors,…
Researchers developed a Raman microscope that can acquire information hundreds of times faster than a conventional Raman microscope. This extra speed makes it possible to acquire large-area hyperspectral images of living cells, such as the ones seen here. Credit: Katsumasa Fujita, Osaka University

How Multiline Illumination Confocal Raman Microscopy is Transforming Biomedical Research

Posted on February 8, 2023
A research team from Osaka University has developed a high-throughput Raman microscope that can acquire information hundreds of times faster than a conventional Raman microscope.
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