DIODE LASERS... COLLECTING SOLUTIONS!

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Opto-mystic offers consulting in the design and development of optical systems, particularly systems that utilize Laser Diodes. While the Diode Laser has revolutionized the world of optics, their effective use can be confusing. Opto-mystic has consulted to various companies for over twenty years on Diode Laser systems design.  As a consultant, Opto-mystic can help your company utilize the wonderful Laser Diode optical source.

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ELECTRO-OPTICS CONSULTING FOR:
science * measurement * industry
manufacturing * printing * medical

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Opto-mystic has participated in the development of these Diode Laser systems:

• Analyzed the beam characteristics of a state of the art communications diode laser (1310 nm). The results of this analysis caused the company to change direction in its product offerings.
• Defined the 5.6 mm optical package for a state of the art communications laser diode (1310 nm) due to be produced in qualities of 50,000 a month.
• Analyzed the characteristics of an optical integrating cylinder line collector. Suggested changes that improved the collection efficiency. Solved the problem of re-illumination from the integrating cylinder. The collector is in production in a X-ray phosphor reader now being sold by Kodak in quantities of 5,000 units per year. One patent issued.
• Conceived and designed a compact vibration insensitive diode laser scanner for use in a phosphor X-ray CR reader
• Defined the optical characteristics of a fiber coupled diode laser scanner for use in a X-ray phosphor CR reader
• Conceived and developed a CW diode laser turnkey system. Diolite won an award as one of the ten best products of 1984 (Lasers and Applications Magazine). Identified the market and coordinated the product launch. Sold company and product. Diolite is being used worldwide. This product gave rise to similar systems by Melles Griot, ILX Lightwave, Spindler & Hoyer and D. O. Industries. LICONIX Inc. of Sunnyvale, CA marketed Diolite.
• Designed diode laser aimer, "Laserscope" and diode laser pointer, "Laserwand". Product introduction allowed company to triple its total sales volume. Products were being sold at a level of 10,000 per year. One patent issued
• Responsible for conception and design of an innovative diode laser scanner for a wide format (36"), high resolution (400 DPI) four color electrostatic printer/plotter. Scanner is extremely compact and robust. Scanner achieved diffraction limited performance with a single plano-convex lens and a beam diameter of 8 mm. In addition, the scanner, without correction, does not posses the three traditional scanner errors: F-Theta, depth-of-field and cross-axis wobble. One patent issued.
• Responsible for conception and execution of a new high accuracy (+/- .0002"), low cost, optical registration system for printer/plotters. The registration system features zero delay activation and therefore does not suffer from averaging errors. This registration system represents the present state of the art in web-fed, wide-format printer/plotters. Two patents issued.
• Conceived and built an optical system to detect chemical species in the atmosphere utilizing Surface Plasmon Resonance (SPR). Received a SBIR phase I award. Achieved all goals of the project plan.
• Project engineering responsibility for sensor development of a diode laser based oxygen meter. Defined sensor configuration that resulted in improvement of more than an order of magnitude in performance. Three patents issued.
• Conceived of a new method to accurately adjust the collimation of a diode laser assembly. System was free of mechanical cross talk even in the presence of significant mechanical asymmetry and featured auto-locking once adjustment was complete. System was robust and yet low in cost and easy to assemble. One patent issued.
• Conceived and built an optical system to measure humidity utilizing Surface Plasmon Resonance (SPR).
• Conceived and built an optical system to measure laser wavelength utilizing Surface Plasmon Resonance (SPR). Fabricated prototype could measure wavelength changes of .02 nm.
• Conceived of a new color printer technology that promises to result in a small format (8.5"-11"), plain paper, dry toner, 400 dpi, 6 ppm or higher printer engine with improved color quality. One omnibus patent was submitted.
• Improved a diode laser interferometer for "Spot Scan" product sold by Photon, Inc., Santa Clara, CA. Improvement enabled product to utilize a multimode diode laser without temperature control and avoided the mode-hopping problem. One patent issued
• Created diode laser spectrum analyzer that utilizes a single detector and yet yields real time diode laser spectrum. Currently being sold by Photon Inc., Santa Clara, CA.
• Created and reduced to practice a new fiber optical registration sensor for high accuracy color printing. Sensor has ability to be mounted in the line of print of a print head thereby eliminating registration error caused by spatial difference between sensor and print head.
• Conceived and reduced to practice a low cost method for rounding a diode laser beam with high efficiency. Enables the use of low cost Low NA lens and yet produces a round, near Gaussian beam in both dimensions.
• Developed a holographic diode laser scanner that was part of a low cost page printer. Responsible for the optical system, selection and vendor identification. Three patents issued.
• Developed process to produce a high efficiency (75%) low cost holographic scanner element. Process involved the production of photo-resist surface relief holograms.
• Worked on the design of a diode laser scanner for a wide format electrostatic printer/plotter. The scanner incorporated a torsional vibrating mirror. Two patents were applied for.
• Conceived and built a new concept in flowing dye cells for Dye Lasers. The cell featured symmetrical light pumping of the dye from four sides.
• Conceived and built an innovative UV/visible light separator for use with non-linear optical frequency doublers that utilized high peak power pulsed lasers.
• Conceived of a method to eliminate the effects of wobble in a holographic laser scanner. The resulting scanner would produce a straight-line scan without additional optics. One patent issued.
• Conceived of special print patterns to allow microanalysis of registration errors through macro viewing in a color printer/plotter.
• Designed a three orthogonal measurement axis laser Doppler velocimeter.
• Created new method to extract the Z-dimension velocity information of a particle using 180-degree dual scatter light from the measurement particle.
• Designed 180-degree dual beam Laser Doppler Velocimeter.
• Designed 180-degree reference beam backscatter Laser Doppler Velocimeter.
• Designed and built a holographic microscope that produced holographic motion pictures of microscopic subjects.
• Designed optical setup and demonstrated "Carrier Suppression and Restoration". This was a method to record a Fourier Transform hologram where the Zero order was removed on exposure and was subsequently reintroduced. This method allowed phase contrast microscopy to be performed with normal sized optical elements.
• Performed experiments to verify the desensitization of time average holographic interferometry.
• Designed and constructed setup to analyze violin's mechanical movement using real time stroboscopic holographic interferometry.
• Analyzed extremely complex eight-prism beamsplitter used in a two axis Laser Doppler Velocimeter and defined the criteria needed to achieve the system goals.
• Incorporated optical pedestal removal into a two axis Laser Doppler Velocimeter.

Iowa State University

University Of Houston

SPECIAL ACTIVITIES

OPTICAL SOCIETY OF NORTHERN CALIFORNIA

PATENTS

• D. Doggett, S. Barasch, M. Wegener, "Design Trade-offs for Diode Laser Holographic Scanner"; SPIE Conference, Advances in Laser Scanning Technology; Vol. 299; August 28, 1981.
• J. Fleischer, D. Doggett "Spectral Profiling with a Single Photo diode"; Lasers And Optronics; April, 1989; p 47-52.