Wide-bandwidth analog correlator and its application to mode-locked laser measurements
Abstract
A new instrument for the analog determination of correlation functions of wide-bandwidth signals is described and characterized. The instrument is comprised of microwave electronic components; a double-balanced mixer performs the multiplication operation involved in the correlation process whereas a constant-impedance line stretcher introduces the variable delay. Measurements indicate that the correlator has a bandwidth of approximately 4 GHz. It is shown that this inexpensive and simple device can be used as a diagnostic tool for mode-locked argon-ion lasers when used in conjunction with a fast photodiode detector.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1979
- Bibcode:
- 1979STIN...7931593R
- Keywords:
-
- Argon Lasers;
- Correlators;
- Laser Mode Locking;
- Broadband;
- Delay Lines;
- Mixing Circuits;
- Power Spectra;
- Signal Analysis;
- Spectroscopy;
- Spectrum Analysis;
- Utilization;
- Lasers and Masers