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  • Laser Diode Principles (.pdf)
    A number of questions and misconceptions surround the laser diode. Are all laser diode specifications identical? Do single-mode diodes always operate as single-mode? What effect does temperature change have on wavelength and optical power? The following explores these and other common diode
  • Correction Methods for Semiconductor Laser Diodes
    A laser diode naturally produces a beam that is divergent, elliptical, and astigmatic. A variety of optical procedures are available to correct for these deficiencies, procedures that enable a laser diode module to produce a circular, diffraction-limited beam with very low divergence. * We can
  • Test and Characterization of Laser Diodes: Determination of Principal Parameters
    It is often necessary to quantitatively assess the quality, performance, and characteristics of laser diodes. This is done through performing a series of experiments and obtaining certain significant parameters from which we can determine how well the laser diode is performing. It is then possible
  • ELDS - Enhanced Laser Diode Spectroscopy
    Laser Diode Spectroscopy (LDS) is a well known method for the sensitive detection and measurement of gases, with techniques including WMS (Wavelength Modulation Spectroscopy), FMS (Frequency Modulation Spectroscopy) and TTFMS (Two Tone Frequency Modulation Spectroscopy) being successfully employed
  • Proper Handling and Operating Requirements Laser Diodes
    Proper Handling and Operating Requirements Laser Diodes
  • Advantages of Semiconductor Laser Diodes Versus Helium Neon Gas Lasers
    and 1.3 inches in length. Also, laser diode modules typically require less than 0.5W of energy, whereas an average HeNe laser requires 10 to 20W of energy to produce a few milliWatts of light. In addition, laser diodes provide an abundance of available wavelengths in the ultraviolet, visible
  • The Principles of Semiconductor Laser Diodes and Amplifiers: Analysis and Transmission Line Laser Modeling
    The Principles of Semiconductor Laser Diodes and Amplifiers: Analysis and Transmission Line Laser Modeling. Focusing on the principle applications of SLAs, this book illustrates the growing importance of these functional components in the future of optical communications systems.
  • Application of the Integrating Sphere Optical Power Measurement System in Laser Diode Characterization
    Integrating spheres are useful for measurement of divergent light emitted from laser diodes. Typically the laser diode is positioned very close to the internal port of the sphere (Figure 1) and light emitted from the front facet of the device is collected by the internal cavity of the integrating
  • Near Field Imaging of a Laser Diode Using Scanning Method
    This application note describes the result of an experiment performed on near field imaging of a laser diode emission pattern at the output facet. The purpose of the experiment was to provide a proof-of-concept system for the near field measurement of a high-power laser diode bar. The target
  • iC-WK/WKL Laser Diode Driver Application Notes
    iC-WK/L - CW operation up to 90 mA from 2.4 to 6 V supply voltage - Fits all types of laser diode pin configurations - Simple power adjustment via the external resistor - Quick soft start typically within 70 ┬Ás - APC accuracy better than 1%