Accession Number : ADA262016


Title :   Operating Manual for Single-Shot Autocorrelator


Descriptive Note : Final technical rept. Jan-Jun 92


Corporate Author : KRUG LIFE SCIENCES SAN ANTONIO TX SAN ANTONIO DIV


Personal Author(s) : Cain, Clarence P ; Noojin, Gary D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262016.pdf


Report Date : Jan 1993


Pagination or Media Count : 30


Abstract : Special instrumentation is required to measure and analyze laser pulses below one nanosecond because of the limitations of standard instrumentation used to measure real-time signals. We have designed and developed an instrument with unique features to measure the pulsewidth of single laser pulses below one nanosecond using the standard autocorrelation technique. A single laser pulse is divided into two equal pulses by a 50/50 beamsplitter and recombined in space and in time inside a wafer of KDP crystal which generates a second harmonic of the combined pulses. These three pulses are then focused on a charge-coupled device (CCD) camera and analyzed by a laser beam analyzer to yield information on the FWHM (full-width-half-maximum) time of the original pulse. By using a CCD camera the full two-dimensional image can be recorded to insure that the correct horizontal profile is analyzed within the vertical profile. The delay for overlapping the beams in time is obtained by translating the beamsplitter while the positioning is obtained by rotating the beam-splitter. The design and results are discussed.


Descriptors :   *AUTOCORRELATION , *LASER BEAMS , REAL TIME , TWO DIMENSIONAL , TIME , PULSES , SIGNALS , CAMERAS , DELAY , CHARGE COUPLED DEVICES , TIME SIGNALS , ANALYZERS , WAFERS , WIDTH , INSTRUMENTATION , STANDARDS , YIELD , IMAGES , LIMITATIONS , PROFILES , LASERS , CRYSTALS , HARMONICS


Subject Categories : Lasers and Masers
      Statistics and Probability


Distribution Statement : APPROVED FOR PUBLIC RELEASE