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April 22 2009

Solid-state Compact Blue-green Lasers: Research and Development; Practical Implementation and Applications in Science and Technology Stepan Essaian Spectralus Presentation. April 22 2009. Introduction to Spectralus. Founded in 2003 Funded by angel investors in 2003-06

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April 22 2009

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  1. Solid-state Compact Blue-green Lasers: Research and Development; Practical Implementation and Applications in Science and TechnologyStepan Essaian Spectralus Presentation April 22 2009 SPECTRALUS CORPORATION

  2. Introduction to Spectralus • Founded in 2003 • Funded by angel investors in 2003-06 • Raised expansion round of funding in 2007 • Partnered with Satori Electric Co. in 2007 • Now expanding production and sales • Headquarters in Santa Clara, CA (USA) → • Management • Marketing and sales • Customer support • Laser lab • Production facility in Yerevan, Armenia • Crystal manufacturing • World-class crystal R&D group • Upgrades completed in 2008: Disco saw, polishing machines, etc. for better production capabilities • Experienced team • Strengths in crystal, optics, and laser design & manufacturing, consumer electronics, and instrumentation SPECTRALUS CORPORATION

  3. Spectralus’ Periodically Poled Crystal Technology • Spectralus developed and began production of new nonlinear optical crystals: periodically poled MgO-doped lithium niobate and lithium tantalate • Also known as: periodically poled LiNbO3, MgO:LiNbO3, and LiTaO3 • These crystals enable new laser capabilities because of their advantages over traditional materials • Wavelength conversion ~10x to100x more efficient than in old materials (KTP, LBO) • They can be engineered for any target wavelength: UV, visible, IR, THz • They are suitable for volume manufacturing for large consumer markets • Low cost is achievable via proprietary wafer-scale production process SPECTRALUS CORPORATION

  4. P P P2 P P deff -deff deff deff -deff P2 deff -deff -deff Direction of polarization of ferroelectric material Spectralus’ Nonlinear Crystal Technology: What is Different? • Nonlinear crystals convert laser wavelength from efficient IR range (1064nm, 976nm, 810nm) to application-desirable 532nm, 488nm, 460nm,405nm, 355nm, etc. • Traditional (uniform) crystals phase-match (synchronize) fundamental and converted laser beams within directions and nonlinearities defined by nature: • Periodically poled crystals use highest nonlinearity coefficient and convert any wavelength (color) by appropriate design of poling period SPECTRALUS CORPORATION

  5. Comparison / Bulk Type and Waveguide Waveguide Advantage： ・High conversion efficiency by keeping incindent laser beam intensity Disadvantage： ・Low yield due to very small incidence area ・High cost due to low yield

  6. Comparison / Bulk Type and Waveguide Bulk Type Advantage： Suitable for Mass-production due to wider incidence area than Waveguide Lower cost than Waveguide due to better production yield

  7. Spectralus’ PPMgOLN Technology in Pictures SHG crystals 532nm green MgO:LiNbO3 with our patented processing (semi-conductor-fab compatible). US patent 7413635 OPO & DFG crystals 488nm blue periodically poled domain grating SPECTRALUS CORPORATION

  8. Spectralus Microchip Technology Spectralus Microchip is bulk type innercavity element, not a waveguide. Length of the Microchip is only 1-2mm which enables us producing compact size Green DPSS laser . Performance: Output power : 100-150mW (CW) WPE : 10-15％ 808nm (IR Pump laser） Lens Microchip Element September 23, 2014 8

  9. Main Green Laser Architectures Spectralus Microchip DPSS Laser • IP: Kuehnelt et al., US2007081564: • Optically pumped semiconductor laser platform • Discrete components, multiple alignment steps (cost!!!) • Great packaging but low efficiency (7%) and high cost IP: S. Essaian et al, US application 11/ 788916, publication number  20080317072. • 808nm diode pumped solid state microchip laser platform • Monolithic structure, practically no alignment steps, low cost • High efficiency, 15-20% • IP: Shchegrov, A.Mooradian et al, US 7,359,420 • Electrically pumped semiconductor laser platform • Discrete but components, medium cost, efficiency ~9% • Technology, still needs work. But company is no longer … SPECTRALUS CONFIDENTIAL

  10. Markets and Applications: Spectralus’ technology is enabling for … Laser Instrumentation Frequency-converted laser sources for: • Biomedical (flow cytometry, DNA sequencing, etc.) – 488, 532, 473 nm • Semiconductor inspection - 488, 532 nm • Medical – 560-590 nm • Spectroscopy / security – 1.5-4.5mm Consumer Electronics Efficient, low-cost visible lasers for • Laser projectors • Entertainment (e.g. laser shows) Military Applications • Key product: Spectralus green laser for • Laser displays • Dazzlers www.symbol.com/LPD http://www.invitrogen.com/content.cfm?pageid=11556 SPECTRALUS CORPORATION

  11. Market Opportunity in Mobile Projectors Toshiba 3M Osram Spectralus • Mobile projectors is a huge emerging market, projected to be in multi-billion USD by 2011 • First-generation LED-based mobile projectors just appeared in 2008: Toshiba, 3M, Dell • LEDs are not bright enough. Industry wants laser sources but there is no adequate green product (red & blue ok) • In the green-laser product race, leading players include large corporations: Corning, Osram, Mitsubishi • However, Spectralus’ unique technology has the best chance to win on efficiency and low production cost SPECTRALUS CORPORATION

  12. SPECTRALUS

  13. Spectralus Green Laser Performance vs. Ambient Temperature The design temperature can (and will) be shifted towards higher values by changing the target PPLN temperature SPECTRALUS CONFIDENTIAL

  14. SPECTRALUS CONFIDENTIAL

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