Desktop Ultra-Short Pulse Laser at 1552 nm

Please download to get full document.

View again

of 27
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Information Report
Category:

Documents

Published:

Views: 30 | Pages: 27

Extension: PDF | Download: 0

Share
Description
Desktop Ultra-Short Pulse Laser at 1552 nm. Ultrashort Pulse Laser Materials Interaction Workshop DIRECTED ENERGY PROFESSIONAL SOCIETY (DEPS) 9-28-06 L. Vaissié, T. Yilmaz, A. Stadler, D. Goldman, M. Farley, J. Lammers, T. Saunders, K. Kim, D. Lijana, L. Collura, M. Mielke , & T. Booth.
Transcript
Desktop Ultra-Short Pulse Laser at 1552 nmUltrashort Pulse Laser Materials Interaction WorkshopDIRECTED ENERGY PROFESSIONAL SOCIETY (DEPS)9-28-06 L. Vaissié, T. Yilmaz, A. Stadler, D. Goldman, M. Farley, J. Lammers, T. Saunders, K. Kim, D. Lijana, L. Collura, M. Mielke, & T. BoothUltraShort Pulse (USP) LasersLong Pulse or CW LasersUSP LasersMetal ablation with femtosecond (right) vs. nanosecond (left) ablation.UltraShort Pulse (USP) Lasers
  • Immense power in each pulse
  • Non-thermal, precision ablation
  • Little or no trauma/damage to remaining material
  • Ablates any material
  • Diagnostics, sensing, other non-ablative properties
  • One source, many uses
  • Interesting capabilities, but impracticalCompelling Capabilities, but…Experimentation and Exploration are DifficultRequires Ph.D.’s to operate and maintainVery Expensive Impractical/Impossible to DeployUntil Raydiance…We took complicated apparatus and turned it into this:
  • Any room, 110 v outlet (800 W)
  • Pulse energy: 1 to 5 µJ
  • Wavelength: 1552.5 µm
  • Pulse rate: 25 kHz - 500 kHz
  • Pulse width: < 3 ps
  • M2 < 1.8
  • Average Power: 2.5 W
  • ~500 fs1ns~ 850fs5 J1nsModelockedDiodeLaserPulseStretcherPulseCompressorHigh PowerAmplifierClassic CPA Approach
  • Mostly fiber-based components
  • High power, dispersion and nonlinearity managed miniature optical network
  • Fiber & Integrated Hardware
  • Use off-the-shelf fiber optics for seed & pre-amp stages
  • Team with strategic partners for subassemblies
  • Build what we can’t buy
  • There are constraints…
  • Peak power density very high in fiber
  • Operation near damage threshold
  • Optical nonlinearities
  • Novel fibers require special attention
  • Multimode effects
  • Parasitic energy losses due to high dopant levels
  • Raydiance User Interface (UI)Desktop USP System Pulse QualityIntensity AutocorrelationIntegrated EnergyFurther Signal Quality DataRetrieved from FROGE-field FWHM: 843 fsAC FWHM: 1.3 psPulse Train Extinction DataSensitive Measurement through RF SpectraRaydiance High ER SystemΔ < 0.05 dBHarmonic AmplitudeExtinction Ratio, Rext> 35 dBRaydiance Development Platform
  • Disruptive USP capabilities
  • Compact, reliable and cost-effective
  • Intelligent laser makes USP easy to use; integrate
  • Liberates USP from specialized research labs
  • Application experts, not laser Ph.D.s
  • Practical to deploy
  • Applications ExamplesEarly Adopters Validating Vision U.S. Food and Drug AdministrationDevice Evaluation and Basic Research Under CRADA
  • Up and running 30 minutes out of packing crate
  • 150 days of intense exploration/experimentation
  • MD’s, not physicists (Johns Hopkins; U of MD)
  • Next generation LASIK
  • Novel cancer treatment approaches
  • DDS office of the future
  • Gene transfection
  • More experiments planned: immune response, arthritis treatment, tattoo removal and many more
  • Ophthalmic Experimentation
  • Wilmer Eye Institute at Johns Hopkins
  • #1 ophthalmic program in country
  • Intrastromal refractive surgery (flapless Lasik)
  • Flap “lock down” designs and procedures
  • Corneal transplant/implant procedures
  • Oncology Experimentation
  • FDA Research Group
  • Effects of non-destructive irradiation
  • Three lines of malignant cancers
  • Various energy/rep rate levels
  • Two weeks of experimentation
  • Darrell B. Tata, Ph.D.A Few DaysOfExperimentationFasterTime-to-InventionJohns Hopkins Applied Physics LabCaptive government lab – DoD applications
  • Up and running just like FDA system
  • Distance interrogation and detection of materials
  • Differentiate explosive, chemical and biological materials
  • Define power (distance) specifications
  • Evaluate feasibility for deployment for HLS and DoD
  • Also may collaborate on medical applications
  • Army Institute of Surgical ResearchPioneer new clinical treatments/surgical approaches
  • Smart-Knife prototype
  • For treatment of profound burn trauma
  • Smart laser differentiates healthy from unhealthy/dead tissue
  • Rapidly ablate unhealthy tissue; leave healthy tissue
  • Less trauma, bleeding, better graft success
  • J. Craig Venter Institute1st to sequence the human genome
  • Gene transfection
  • Improve process in animal and plant transfection
  • Could have huge impact on bio-agra business
  • Could be critical to success of emerging synthetic biology sector
  • For-profit enterprise spun out last year
  • Black silicon Eric Mazur, HarvardUrethane acrylateKenji Takada, OsakaOther Projects
  • Vaporizing tattoos
  • Acne and sun damage treatment
  • Pathology
  • Minimally-invasive (fiber optic) smart-surgery
  • Polymer and composite material processing
  • Sub-dermal ablation
  • Black silicon (solar energy)
  • And many others in discussion
  • USP Technology DirectionsRaydiance Bragg Fiber for USP
  • Large diameter, hollow core
  • to sustain high peak power without appreciable distortion
  • Delivery of ultrashort laser
  • pulses
  • Temporal pulse compression
  • for all-fiber CPA systemsBragg Fiber for High Energy, USP DeliveryEarly Results
  • USP light is versatile; potentially very disruptive
  • V1.0’s relatively low power level is enabling important uses right out of gate
  • Ease of use, computer-control supports rapid experimentation
  • Developers/inventors beginning to stake claims
  • Important discoveries
  • IP capture
  • Commercialization
  • Product Roadmap Will Broaden Markets
  • Increased Power
  • Near term – 10-25 μJ/pulse (on target)
  • Navy project – 2.5 mJ/pulse (on target)
  • More features
  • User adjustable pulse duration
  • Broader rep rate ranges
  • More software modules
  • Fiber beam delivery
  • Lower cost of goods initiatives to drive volume markets
  • Commercialization – A Platform PlayDeveloper PlatformProduction VersionVolumeProductionInvention & IP DevelopmentConcept ValidationRapid PrototypingApplication powered by RaydianceAt market-enabling cost of goodsOwned by Application Developer
    Recommended
    View more...
    We Need Your Support
    Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

    Thanks to everyone for your continued support.

    No, Thanks
    SAVE OUR EARTH

    We need your sign to support Project to invent "SMART AND CONTROLLABLE REFLECTIVE BALLOONS" to cover the Sun and Save Our Earth.

    More details...

    Sign Now!

    We are very appreciated for your Prompt Action!

    x