Lasers News

The KETmaritime consortium delivering a major pan-European project showcasing ‘next-generation’ technology (Photo: KETmaritime)

Maritime Blue-Light Laser Discovered

the detection of underwater objects including submarines and archaeological sites.Project coordinator Ana Vila from the International Iberian Nanotechnology Laboratory (INL) said: “In recent months, France-based multidisciplinary research laboratory CIMAP has been actively developing blue-light lasers in constant wave and pulsed regimes,” she said. “It recently achieved a record 7.5W constant wave output at 452nm wavelength. This is understood to be by far the highest constant wave ‘pure blue’ power generated from a frequency-doubled fiber laser.“The absorption of

(Photo: Aqueos Corporation)

Aqueos Wraps Up Subsea Inspections Offshore California

(CP) surveys to help determine the effectiveness of the current cathodic protection systems. A portion of the CP surveys included the cleaning of select anodes throughout the jackets, both by divers and the ROV and the taking of measurements, both manually in the case of the divers and by scaling lasers when taken by the ROV.The surveys of the three jackets took place concurrently, with the diving operation conducted from the jackets and the ROV operations were performed from a floating asset. Through the course of the inspection program, the ROV performed more than 100 dives with nearly 700 hours

Your sea trials, here: a SINTEF test basin. Credit: SINTEF

Higher Learning & SINTEF’s Existential Rise

for study and one to create commercial value out of the apparent solution. So, when salmon lice infestations at a Norwegian salmon farms became too great a problem, SINTEF adopted a two-tier approach: help regulators study the salmon, the lice and the river and offer to help creating innovations like lasers that shoot the lice off the fish. For large-scale aquaculture and fisheries vessels, there’s SINTEF wave and model analysis in first-class test tanks. The result has been offshore aquaculture structures on the scale of an offshore oil rig and fish-handling vessels for worldwide markets.&ldquo

Crab Comms: "It's not hunger pains, I just want to talk ..."

of stridulation from her ghost crabs, neither their legs nor claws were moving.Collaborating with Damian Elias from UC Berkeley, Taylor verified where she thought the noise could be coming from. The stomachs of many crustaceans contain a gastric mill, a three-pronged structure used to grind food. Using lasers to pinpoint areas of the crab that could be responsible for the noise and then analyzing the sound signature, they found that the interior of the crab where the stomach is located was responsible for producing the sound."The first time I heard the rasp, I couldn't believe how clear the sound

Out-of-this-world: a UX-1 HROV. Photo: EU UNEXMIN Project

Subsea Mining: The Next Big Thing for UUVs

or minerals being lifted. In all, INESC TEC developed the “perception, navigation and awareness systems” for the mining vehicle and EVA robot (together the same EU project).The other AUV developed under the aegis of the EU is the UX-1 (prototype) or UX-1b, a spherical vehicle equipped with lasers to help mining vehicles navigate and mining companies understand the contours of an underwater mine. Impressively, INESC TEC is also a key outfitter for this Europe-wide research success story that involved 17 consortium partners from nine European countries, including robot developers SMD and BMT

3D at Depth SL3 non-touch data collection process with the TBD-1 Devastator Aircraft (Credit: Air/Sea Heritage Foundation photo by Brett Seymour)

Subsea Wreck Brought to Life by Lasers

An innovative underwater survey technique that integrates photogrammetry with Subsea laser LiDAR (SL) technology has helped create accurate, precise, reverse engineered 3D models of a rare and historically significant aircraft resting at the bottom of the sea.The technique was developed during an October 2018 expedition with the nonprofit Air/Sea Heritage Foundation to document the largely intact wreck of a US Navy Douglas TBD-1 Devastator aircraft on the seafloor of the Jaluit Lagoon in the Republic of the Marshall Islands (RMI).Of the 129 Devastators built, all were either lost in battle, destroyed

CFIS

Shell Ocean Discovery XPrize Field Pared to 9

; Blue Devil Ocean Engineering (USA) Led by Martin Brooke, the Duke University team is working with heavy lift aerial drones that drop retrievable diving SONAR pods.    CFIS (Switzerland)  Led by Toby Jackson, the team is building a fleet of AUVs to map and image the ocean floor using lasers.   GEBCO-NF Alumni (USA)  Led by GEBCO-Nippon Foundation alumni, the 12-nation team is integrating existing technologies and ocean-mapping experience with an innovative unmanned surface vessel to contribute towards comprehensive mapping of the ocean floor by 2030.   KUROSHIO (Japan)&nb

Calibrating the equipment: Newton’s M3200UW scans a pipe using Sonardyne’s SPRINT 500 and Fusion 6G software to remove the risk of latency and timing jitter, to gain centimetric level precision. (Photo: Sonardyne)

Underwater Laser Mapping on the Move

simultaneously providing motion compensation for laser scanners, is remarkable. Combined with the high resolution of Newton laser scanners, mobile laser mapping is now a real game-changer.”   John Bramblet, President and CEO at Newton Labs, said, “Integration of Newton Labs underwater lasers with Sonardyne SPRINT technology allows our high, 0.1 mm, resolution scanners to perform virtually any laser scanning project, whether it is full field scanning, pipeline scanning or high resolution corrosion and crack detection all from a mobile platform.”  

Image: Savante

Precision Underwater Laser Scanner for Divers

Aberdeenshire-based Savante Subsea Lasers has miniaturized its dynamic laser scanning (DLS) technology into an integrated diver-operated 3D laser measurement solution.   The CTS-3D underwater laser scanner, a handheld diver operated tool, integrates Savante’s 3D laser scanning technology into a compact, lightweight unit. It quickly creates an accurate, digital-virtual representation of submerged structures using a cloud of precisely-determined 3D points (a "surface point cloud"). Accompanied with photometric measurement of the intensity of optical energy at each measured point

This frame grab from video taken by MBARI’s MiniROV shows the inner house of a giant larvacean, with its inner chambers outlined by the red sheet of laser light from the DeepPIV system. Image © 2015 MBARI

Lasers Shed Light on the Inner Workings of the Giant Larvacean

(ROV). Later that year Katija joined Senior Scientist Bruce Robison and the rest of the DeepPIV team in their first field test, using the MiniROV to dive 1,200 meters (4,000 feet) below the surface of Monterey Bay. When the team spotted their first giant larvacean, the ROV pilot turned on the lasers, switched off the ROV’s lights, and held the ROV in position while a sheet of laser light scanned through the larvacean’s body and house. Some of the scientists on the cruise had studied giant larvaceans for years, but when the laser switched on, suddenly they could see chambers and passageway

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