NDLI: Coherent communication link using diode-pumped lasers

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Coherent communication link using diode-pumped lasers

Content Provider	NASA Technical Reports Server (NTRS)
Author	Kane, Thomas J. Wallace, Richard W.
Copyright Year	1989
Description	Work toward developing a diffraction limited, single frequency, modulated transmitter suitable for coherent optical communication or direct detection communication is discussed. Diode pumped, monolithic Nd:YAG nonplanar ring oscillators were used as the carrier beam. An external modulation technique which can handle high optical powers, has moderate modulation voltage, and which can reach modulation rates of 1 GHz was invented. Semiconductor laser pumped solid-state lasers which have high output power (0.5 Watt) and which oscillate at a single frequency, in a diffraction limited beam, at the wavelength of 1.06 microns were built. A technique for phase modulating the laser output by 180 degrees with a 40-volt peak to peak driving voltage is demonstrated. This technique can be adapted for amplitude modulation of 100 percent with the same voltage. This technique makes use of a resonant bulk modulator, so it does not have the power handling limitations of guided wave modulators.
File Size	1161530
Page Count	23
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19920002931
Archival Resource Key	ark:/13960/t5p895z62
Language	English
Publisher Date	1989-08-01
Access Restriction	Open
Subject Keyword	Communications And Radar Frequency Modulation Phase Modulation Laser Pumping Yag Lasers Amplitude Modulation Semiconductor Diodes Oscillators Transmitters Semiconductor Lasers Diffraction Solid State Lasers Optical Communication Ring Lasers Neodymium Lasers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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