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  • High Spatial Resolution Measurement of Volume Holographic Gratings
    The conventional approach for measuring volume holographic gratings typically requires measuring the transmitted and diffracted beams simultaneously while varying the angle of incidence. To obtain the spectral response a tunable laser is used with a fixed angle of incidence. In the former case
  • Single Longitudinal Mode Blue-Violet Laser Diode for Data Storage
    blue-violet laser diode source with a long coherence length and some level of wavelength tuning. Prior approaches, such as external cavities with diffraction gratings [1], have been used to generate single longitudinal mode tunable lasers near 405 nm. Such cavities require a very low reflectivity
  • Supercontinuum Generation in SCG-800 Photonic Crystal Fiber
    . Optical Windows. Beam Expanders & Objectives. Multielement Optical Assembly. Diffraction Gratings. Cleaning & Other Lab Essentials. Optical Modulators. Lasers. Lasers. Ultrafast Lasers. High Energy Pulsed Lasers. CW & Quasi-CW Solid State Lasers. Q-Switched DPSS Lasers. Tunable Lasers. Tunable Diode
  • MICRO: Critical Materials
    processing techniques. Dual-cell near-infrared absorption spectroscopy using a tunable diode laser over a narrow spectral bandwidth is another method for detecting trace spectroscopic levels of moisture in ammonia. This article describes the design and operation of a novel IR spectroscopic instrument
  • Near IR Spectroscopy in Process Analysis
    . NEAR-IR SPECTRA. 4. DATA ANALYSIS. 4.1. Partial Least Squares. 4.2. Multiple Linear Regression. 4.3 Calibration Transfer. 5. FIBER OPTIC INSTRUMENTATION AND REQUIREMENTS. 5.1. Scanning Grating Spectrophotometers. 5.2. Fourier Transform NIR Spectrophotometers. 5.3. Acousto-optic Tunable Filter. 5.4
  • Liquid Crystals - Preface
    for electro-optics and display, and nondisplay related applications such as sensing, switching and specialized nanostructured tunable photonic crystals and frequency selective surfaces. In Chapter 7 we provide a thorough account of the various theoretical and computational techniques used to describe
  • Scanning Lens Theory (.pdf)
    of the birefringence dictates. whole waves plus the fractional retardation required. that the spectral range for the standard waveplate is. approximately 10 nm. To accommodate tunable sources. or sources with larger spectral widths, a waveplate that is. Temperature, Wavelength and Angle of relatively
  • Retardation Plate Theory (.pdf)
    of the birefringence dictates. whole waves plus the fractional retardation required. that the spectral range for the standard waveplate is. approximately 10 nm. To accommodate tunable sources. or sources with larger spectral widths, a waveplate that is. Temperature, Wavelength and Angle of relatively

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