Accession Number : ADA292596

Title :   Compact Tunable Light Source Based on Non-Linear Optics. Topic Number AF94-011. Phase 1.

Descriptive Note : Final technical rept. 15 Jun-14 Dec 94,

Corporate Author : FOCUSED RESEARCH INC SUNNYVALE CA

Personal Author(s) : Bortz, Michael ; Day, Timothy

PDF Url : ADA292596

Report Date : 14 FEB 1994

Pagination or Media Count : 22

Abstract : Periodically Poled waveguides on lithium niobate and other nonlinear materials capable of quasi-phase-matched second harmonic generation have recently achieved conversion efficiencies above 100% per watt. Combined with semiconductor diode lasers, such waveguide devices promise compact sources to blue and green light (390-490 nm) with power above 2 mW today and above 100 mW in the future. An essential prerequisite is a stable pump source such as the external-cavity diode lasers (ECDL's) produced by New Focus, inc. The second harmonic can be tuned by varying the input wavelength and the temperature of the nonlinear waveguide simultaneously, or designing a broad phase-matching band. In some applications such as holographic data storage and process monitoring, tunable narrowband blue and green light is highly desirable. The ECDL doubler concept provides convenient tunability with little increase in complexity. The propose to combine periodically poled waveguide technology with compact new ECDL designs to achieve a tunable blue/green source in a 4 in. x 4 in. x 6 in. package which may be reduced to 1 in. x 1 in. x 3 in. - or even smaller - by incorporating micro-optical and micro-mechanical components. The success of this program will facilitate for compact nonlinear optical sources in the 3000-5000 nm range. (MM)

Descriptors :   *NONLINEAR OPTICS, *OPTICAL WAVEGUIDES, *LIGHT SOURCES, LASER PUMPING, LASER CAVITIES, TUNABLE LASERS, ELECTROOPTICS, SECOND HARMONIC GENERATION, SEMICONDUCTOR LASERS, SEMICONDUCTOR DIODES, HOLOGRAPHY, OPTICAL STORAGE, BLUE(COLOR), MICROMECHANICS, LITHIUM NIOBATES, GREEN(COLOR).

Subject Categories : Optics
      Lasers and Masers
      Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE