Desktop Ultra-Short Pulse Laser at 1552 nm - PowerPoint PPT Presentation

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Desktop Ultra-Short Pulse Laser at 1552 nm

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Desktop Ultra-Short Pulse Laser at 1552 nm Ultrashort Pulse Laser Materials Interaction Workshop DIRECTED ENERGY PROFESSIONAL SOCIETY (DEPS) 9-28-06 – PowerPoint PPT presentation

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Title: Desktop Ultra-Short Pulse Laser at 1552 nm


1
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

2
UltraShort Pulse (USP) Lasers
Long Pulse or CW Lasers
USP Lasers
Metal ablation with femtosecond (right) vs.
nanosecond (left) ablation.
3
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

4
Interesting capabilities, but impractical
Compelling Capabilities, but Experimentation
and Exploration are Difficult Requires Ph.D.s to
operate and maintain Very Expensive
Impractical/Impossible to Deploy
5
Until Raydiance
We took complicated apparatus
and turned it into this
  • Pulse width lt 3 ps
  • M2 lt 1.8
  • Average Power 2.5 W
  • Any room, 110 v outlet (800 W)
  • Pulse energy 1 to 5 µJ
  • Wavelength 1552.5 µm
  • Pulse rate 25 kHz - 500 kHz

6
Classic CPA Approach
  • Mostly fiber-based components
  • High power, dispersion and nonlinearity managed
    miniature optical network

7
Fiber Integrated Hardware
  • Use off-the-shelf fiber optics for seed pre-amp
    stages
  • Team with strategic partners for subassemblies
  • Build what we cant 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

8
Raydiance User Interface (UI)
9
Desktop USP System Pulse Quality
Intensity Autocorrelation
Integrated Energy
10
Further Signal Quality Data
Retrieved from FROG E-field FWHM 843 fs AC
FWHM 1.3 ps
11
Pulse Train Extinction Data
Sensitive Measurement through RF Spectra
Raydiance High ER System
? lt 0.05 dB Harmonic Amplitude
Extinction Ratio, Rextgt 35 dB
12
Raydiance 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

13
Applications Examples
Early Adopters Validating Vision
14
U.S. Food and Drug Administration
  • Device Evaluation and Basic Research Under CRADA
  • Up and running 30 minutes out of packing crate
  • 150 days of intense exploration/experimentation
  • MDs, 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

15
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

16
Oncology Experimentation
  • FDA Research Group
  • Effects of non-destructive irradiation
  • Three lines of malignant cancers
  • Various energy/rep rate levels
  • Two weeks of experimentation

17
Darrell B. Tata, Ph.D.
A Few Days Of Experimentation
Faster Time-to-Invention
18
Johns Hopkins Applied Physics Lab
  • Captive 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

19
Army Institute of Surgical Research
  • Pioneer 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

20
J. Craig Venter Institute
  • 1st 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

21
Other 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

22
USP Technology Directions
23
Raydiance 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 systems

24
Bragg Fiber for High Energy, USP Delivery
25
Early Results
  • USP light is versatile potentially very
    disruptive
  • V1.0s 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

26
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

27
Commercialization A Platform Play
Production Version
Developer Platform
Volume Production
Application powered by Raydiance At
market-enabling cost of goods Owned by
Application Developer
Invention IP Development Concept
Validation Rapid Prototyping
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