• Eric J. Lerner

    Contributing Editor, Laser Focus World

    Eric J. Lerner is a contributing editor for Laser Focus World.

    FIGURE 1. The GLAS laser altimeter includes three laser boxes (yellow), a 1-m-diameter mirror with shroud, heat pipe (red) and side radatiors (top), as well as a star tracker (pink), electronics boxes, and a small telescope (grey) for the stellar reference system (bottom). GLAS's 1-m telescope focuses light from a Nd:YAG laser into a beam that is 70 m wide when it bounces off ice, land, sea, and clouds below. The time of return of the 5-ns-long pulses provide 1-cm accuracy in measurements of ice-cap thickness.
    Eric J. Lerner
    Oct. 1, 2002
    A laser altimeter is one of the most vital instruments in the study of global warming.
    A light-emitting diode array on the rear of this vehicle in a research project at California Partners for Advanced Transit and Highways takes data from the wheels and brakes and sends a signal to following cars indicating the acceleration and velocity of the vehicle.
    Eric J. Lerner
    Aug. 1, 2002
    Despite safety improvements, automobile crashes still kill more than 40,000 people a year in the United States, and ten times that many worldwide.
    FIGURE 1. The International Technology Roadmap of Semiconductors, the industry-wide plan for technological progress, outlines the goals for lithography as linewidths of ICs shrink.
    Eric J. Lerner
    July 1, 2002
    Krypton fluoride, argon fluoride, and fluorine lasers mark the steps toward smaller linewidths as lithography makes faster and more complex chips.