asteroza + laser   394

Diamonds could have the power to recharge drones in flight
Some sort of laser power beaming, using diamond cooled LED lasers?
diamond  cooling  LED  laser  wireless  power  beaming  WPT  transfer 
9 weeks ago by asteroza
Polymath: Beamed propulsion doable now, and with it space solar power.
microLED's have parallel but non-coherent output, which may be servicable for use as a light beam source for beamed propulsion, aka laser launch
microLED  noncoherent  light  source  beamed  power  propulsion  space  research  technology  laser 
10 weeks ago by asteroza
Microwave Rocket Team | Komurasaki Lab., UT, Japan.
Looking at laser/microwave beam powered air breathing pulsejet propulsion, which may be attractive as an SRB booster replacement for ground launch.
airbreathing  pulsejet  ground  launch  microwave  laser  beamed  propulsion  research  technology  space  rocket  engine 
10 weeks ago by asteroza
Quantum Physicists Found a New, Safer Way to Navigate | WIRED
Quantum magnetometer showing strength and direction, mapped to know earth mag anomalies, as well as a quantum laser rate gyro that requires no drift resets.
quantum  sensor  navigation  magnetometer  earth  anomaly  field  mapping  laser  rate  gyro  diffraction  pattern  hardware  electronics  devices  research  technology 
november 2018 by asteroza
Using lasers to drill holes through battery electrodes to facilitate better ion transport
japan  laser  drill  drilling  materials  preprocessing  research  technology  battery  electrode 
october 2018 by asteroza
Optonicus – Intelligent Optical Systems
Now doing lasercomm, laser power beaming, and laser weapons
laser  Wireless  power  transmission 
september 2018 by asteroza
Interesting evolution of the older laser keyboard, now combined with a DLP projector to show a monitor as well
DLP  projector  display  laser  keyboard  bluetooth  hardware  electronics  devices  wireless 
august 2018 by asteroza
Holtec International - A Generation Ahead by Design
Apparently working on a hybrid laser arc welding system for use on nuclear vessel welding. Using the laser to make an ionization path for the arc to better control the arc perhaps?
hybrid  laser  arc  welding  research  technology  SMR  nuclear  reator  vessel 
july 2018 by asteroza
Mynaric – Connectivity for the skies and beyond
air-to-air mesh, air-to-ground via gateway terminal, and air-to-space. Plus allegedly supplying StarLink/SpaceX
space  lasercomm  freespace  optical  laser  communication  aviation  aircraft 
july 2018 by asteroza
UHD Video Transmission Over Bidirectional Underwater Wireless Optical Communication - IEEE Journals & Magazine
Uses green laser for downlink/primary data, blue for uplink/feedback for compensating for poor water clarity
underwater  laser  communications  lasercomm  UWOC  optical  blue  green  adaptive  link  research  technology  video 
may 2018 by asteroza
Continuous-wave room-temperature diamond maser | Nature
A step up from that organic crystal maser, which was materials limited to pulse ops
room  temperature  continuous  wave  maser  materials  science  research  technology  physics  optics  oscillator  diamond  laser  pumped  defect  vacancy 
april 2018 by asteroza
NIMPH: Nano Icy Moons Propellant Harvester | NASA
This requires a beamed laser power system from orbiter to lander for ISRU ops
NASA  NIAC  laser  beamed  power  ISRU 
april 2018 by asteroza
A Breakthrough Propulsion Architecture | NASA
Thin film solar array/solar sail powered by a long range laser feeds a lithium ion thruster
NASA  NIAC  thin  film  solar  array  laser  beamed  propulsion  hybrid  electric  ion  thruster 
april 2018 by asteroza
PROCSIMA: Diffractionless Beamed Propulsion | NASA
Hybrid beamed propulsion rig, using favorable interactions between a neutral particle beam and a colinear laser to self focus and shepard the other.I wonder how applicable this is to conventional laser beam stuff (though the minimum beam strength probably stops anything less than a propulsion laser)
NASA  NIAC  beamed  propulsion  hybrid  neutral  particle  beam  laser  diffractionless 
april 2018 by asteroza
Heat Accumulation in Laser-Based Removal of Space Debris | AIAA Journal
Laser brooms for orbital debris may face heating restrictions due to accumulated internal heat, forcing longer ablation campaigns. But, because of this cooling requirement, if you flip that around, it might imply a debris removal campaign may prefer a fast slewing pulse laser to hit any and all debris a laser station can see on every orbital pass. Basically touch everything a little bit, all the chances you get.
space  trash  orbital  debris  removal  laser  broom  sweeper  heat  retention  limit  dwell  time  liquification 
march 2018 by asteroza
Transactions of the Symposium on Space Nuclear Power Systems, (5th) Held at Albuquerque, New Mexico on January 11, 1988. | National Technical Reports Library - NTIS
The PDF contains info on wheelguns, giant counterrotating flywheel hoops in space to supply power to SDI weapons, mainly railguns/particle accelerator cannons/free electron lasers that need huge amounts of power right now. Appears to expect to be trickle charged over time by a small space nuclear reactor (SNAP? atomic teakettle?). Also has an interesting microwave power beaming scenario from a nuke in mars synchronous orbit to a ground rover, high performance radiators, including a fabric heatpipe radiator, a curie point magnetic liquid droplet radiator, and other power conversion concepts.
SDI  wheelgun  space  counterrotating  flywheel  hoop  energy  storage  power  generator  FEL  free  electron  laser  railgun  neutraal  particle  accelerator  cannon  military  WPT  microwave  transmission  mars  MSO  rectenna  rotating  loop  pulsed  fabric  radiator  heat  thermal  management 
march 2018 by asteroza
Laser-Induced Graphene by Multiple Lasing: Toward Electronics on Cloth, Paper, and Food - ACS Nano (ACS Publications)
So, uh, what about the problem of CNT's and their ilk being the equivalent of wire saws on biological materials? There's a lot of health implications for nanomaterials that haven't been intensively studied yet. Just look at the mess microbeads are making and we are only now getting a grip on their effects.
laser  induced  graphene  production  materials  science  research  technology  label 
february 2018 by asteroza
Beating LIDAR - Achuta Kadambi - MIT Media Lab
Using heterodyning LIDAR to achieve very high resolution at range, and might be able to punch through fog. WHich makes you wonder if the same trick could be used for lasercomm lasers which always had a rain/fog fade problem...
laser  optics  LIDAR  ranging  beat  note  superheterodyne  heterodyne  frequency  wavelength  research  technology  signal  processing  DSP  time-of-flight  range  measurement  sensor  camera 
january 2018 by asteroza
Fission-activated laser as primary power for CW laser propulsion
This seems to go over the FALCON nuclear pumped laser reactor as a 10MW prototype for a laser thermal beamed power SSTO.
laser  thermal  beamed  power  SSTO  rocket  space  nuclear  pumped  reactor 
december 2017 by asteroza
FALCON reactor-pumped laser description and program overview (Conference) | SciTech Connect
This is circa 1989-1991, and seems to feel a single laser/reactor complex can get to 100MW and have higher efficiency. Though beam quality will be an issue due to gas gain medium.
nuclear  pumped  continuous  wave  laser  reactor  fission  fragement 
december 2017 by asteroza
One-step volumetric additive manufacturing of complex polymer structures | Science Advances
Using holographic imaging techniques (aka 3 or more lasers shining on the same spot) to solidify liquid polymers in a batch, allows faster 3D buildup
3D  printing  fabbing  printer  fabber  materials  science  research  technology  laser  solidification  liquid  polymer 
december 2017 by asteroza
Phys. Rev. Lett. 116, 185003 (2016) - Enhanced Multi-MeV Photon Emission by a Laser-Driven Electron Beam in a Self-Generated Magnetic Field
Laser pumped gamma ray synchrotron radiation beam emitter, firing a laser on a plastic target within a mag field, causing electron zigzag and thus gamma ray lasing within the result plasma for a terawatt level pulsed beam
laser  pumped  gamma  ray  pulsed  beam 
november 2017 by asteroza
Phys. Rev. Lett. 106, 162501 (2011) - Proposal for a Nuclear Gamma-Ray Laser of Optical Range
Interesting concept for an externally pumped nuclear gamma ray/vacuum UV optical range laser
nuclear  physics  research  gamma  ray  nucleon  light  optical  UV  laser 
november 2017 by asteroza
Fully Integrated Hybrid Silicon Two Dimensional Beam Scanner | Bowers
The underlying tech behind Strobe Inc.'s (now GM/Cruise) fancy pants chip LIDAR. Uses optical phased array for one dimensional scanning, and frequency variation through a prism lens to achieve scanning in the other dimension, rather than a full 2D optical phased array (so easier to make?)
solid  state  hybrid  chip  LIDAR  optical  phased  array  variable  frequency  laser  prism  lens 
october 2017 by asteroza
Analysis of the Micromachining Process of Dielectric and Metallic Substrates Immersed in Water with Femtosecond Pulses
Using femtosecond lasers to carve fine holes in stuff using a cover layer of water being exploded. Could this be used to make unearthly PCHE rigs?
femtosecond  laser  etch  etching  micromachining  manufacturing  research  technology  metal 
september 2017 by asteroza
Optical detection of radio waves through a nanomechanical transducer : Nature : Nature Research
Use a membrane as part of a resonant capacitor circuit to receive a specific frequency, detect activity by laser sensing membrane movement.
nanomechanical  transducer  capacitor  laser  RF  receiver  low  noise  optoelectromechanical  sensor  membrane 
september 2017 by asteroza
Micromachines | Free Full-Text | Analysis of the Micromachining Process of Dielectric and Metallic Substrates Immersed in Water with Femtosecond Pulses
using femtosecond laser pulses at a focalpoint in water just above a surface allows etching via shockwave/explosive force at high precision
femtosecond  laser  shockwave  etching  wet  water  3D  printing  fabbing  manufacturing 
august 2017 by asteroza
FEMTOprint | 3D printing for glass microdevices
Using a femtosecond laser to etch stuff without a photoresist layer, can also etch stuff inside transparent items. You could make a epic PCHE with this, but it would take forever and cost a fortune...
femtosecond  laser  etching  3D  printing  fabbing  manufacturing 
august 2017 by asteroza
Directed energy atmospheric lens could revolutionise future battlefields | BAE S...
Using the edge of the atmosphere as a surface interface, which can be manipulated with pulse lasers to be physically shaped into lens shapes to fiddle with optics. So can be used as a focuser for lasers and ground observation telescopes, and as a diffuser for self protection/obfuscation of space assets.
BAe  laser  atmospheric  lens  pulse  kerr  effect  optics  research  technology  space  telescope  observation  surveillance  defense  military  Delicious 
january 2017 by asteroza
Courtesy of CES 2017, a mosquito killing laser RC tank. I wonder if this differentiates between male and female mosquitos?
mosquito  insect  pest  extermination  laser  RC  tank  robot  UGV  drone  Delicious 
january 2017 by asteroza
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