Lasers & Sources | Laser Focus World

FIGURE 1. This 905 nm four-channel surface-mount laser provides >480 W peak power.

Lasers for Lidar: Monolithic multichannel laser moves automotive lidar toward practical use

A four-channel laser and ultrafast driver delivers more than 480 W peak power in 2 ns pulses.

This ultrafast laser is used for industrial transparent and brittle material cutting.

GTS and Vitritech create new types of laser glass

Northrop Grumman was awarded a $200M contract for its LAIRCM system that protects aircrews by automatically detecting, tracking, and jamming incoming IR threats. Shown is the Guardian (trademarked) Pointer/Tracker.

Northrop Grumman awarded $200M infrared countermeasures contract

Single-layer OLED design could dramatically reduce display costs

When illuminated with laser light, a liquid-crystal elastomer robot (inset) about 1 cm long crawls up walls and across ceilings just like the banded snail sitting next to it.

Light-activated LC elastomer propels biomimetic “snail robot”

Featured

John Ambroseo, President and CEO of Coherent.

Business Forum: Laser markets evolve, price battles continue—an interview with John Ambroseo

QCL-based infrared spectroscopic ellipsometer rapidly acquires data

Frequency-comb Sources: One microresonator-based soliton comb replaces multiple WDM lasers

Shown are tuning curves for three quantum dots positioned on the waveguide at the locations shown in the inset, to achieve identical emission (a). High-resolution Fabry-Perot interferometer measurements show all three quantum dots simultaneously from an output coupler with identical emission wavelength (b).

Quantum Sources: Squeezed quantum dots create coherent streams of quantum-ready photons

FIGURE 1. In the scalable setting of a spatial photonic Ising machine, binary spins are encoded in the phase of a laser beam (green) by spatial modulation. Tailoring of the beam’s amplitude fixes spin-spin interaction. To find the ground-state spin configuration, the machine recurrently evolves according to a feedback signal from the camera plane. By design, maximizing the intensity in a target region (blue square) corresponds to a spin state with minimum energy.

Photonics Modeling: Optical Ising machines solve complex engineering, science, and even business problems

FIGURE 1. Broad clinical applications of photobiomodulation therapy aim at reducing pain and inflammation while promoting healing and regeneration.

Phototherapy: Photobiomodulation therapy—easy to do, but difficult to get right

The leading kHz CEP-stabilized amplifiers – from Coherent

The leading kHz CEP-stabilized amplifiers – from Coherent

Reliable 5 fs and EUV Generation with a One-Box Titanium Sapphire Amplifier

Reliable 5 fs and EUV Generation with a One-Box Titanium Sapphire Amplifier

Northrop Grumman has been selected to develop and integrate a directed-energy prototype solution on a Stryker combat vehicle for the U.S. Army to better protect highly mobile frontline units. The effort will culminate in a competitive performance checkout leading into a range demonstration that informs Maneuver Short Range Air Defense (M-SHORAD) requirements.

U.S. Army contracts Northrop Grumman to develop laser weapon for combat vehicles

Photonics and quantum technology company M Squared Lasers will create 24 new jobs, including 18 new highly-skilled scientific roles, with a $3.5 million dollar (2.9 million pound) research and development (R&D) grant from Scottish Enterprise.

M Squared $3.5M R&D grant to accelerate quantum technology

The LaserTune (left), a packaged QCL by Block Engineering, is the light source in the company's LaserWarn 'trip-wire' open-path gas-sensing system (right).

Block MEMS wins $3.5M DARPA contract to protect urban environments against chemical threats

Jenoptik's CFO Hans-Dieter Schumacher (left), and its president and CEO Dr. Stefan Traeger (right).

Stefan Traeger to be chairman of Jenoptik Group for five more years

Shown is the team working on the SYLOS laser.

SYLOS ultrashort-pulse laser could solve nuclear waste problem

In the first 5 years of system rollouts, 5G subscribers will significantly outpace 4G subscribers.

5G subscribers in Asia, North America to surpass 1.1 billion by 2023--triple the 4G pace

Reinhart Poprawe with some of his 200 PhD students.

An era ends—Reinhart Poprawe retires

FIGURE 1. A real laser beam will have a divergence angle (θR) greater than that of an ideal Gaussian beam (θG); the beam’s wavefront is planar in the near field near the beam waist and curved in the far field.

Laser Beam Quality: Beam propagation and quality factors: A primer

FIGURE 1. An illustration of liquid-crystal metasurface (LCM) beam steering depicts its operation. The incident light is TM-polarized. Shown here, the LCM steers to two different output angles (a and b), determined by the spatial frequency of the phase-modulation pattern applied to the array of tunable resonators on the LCM (c and d). Higher spatial frequencies steer the output beam closer to the incident beam.

Optics for Automotive Lidar: Metasurface beam steering enables solid-state, high-performance lidar