Computer Science
Scientific paper
Mar 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002stt..conf..349k&link_type=abstract
Thirteenth International Symposium on Space Terahertz Technology, held 26-28 March 2002 at Harvard University, Cambridge, MA. O
Computer Science
1
Mach-Zehnder Interferometer, Local Oscillator, Submillimeter
Scientific paper
We have developed a scheme for generating a comb of radio frequencies, covering the microwave to millimeter spectral range. The system utilizes a single diode laser coupled to an optical Mach-Zehnder interferometer and photodetector. Frequency modulating the laser at a rate of 2.154 GHz, we observe an electrical signal from the photodetector with a spectrum that is a comb that extends beyond the 40th harmonic of the fundamental modulation frequency. The line width of the electrical output is less than 2 Hz. We have compared the phase stability of an element of the comb with the output from a classical diode frequency multiplier (both driven from the same source) and have concluded that a phase-stable output can be generated. Finally, we have developed analytical and numerical models that suggest that our scheme may be used for frequency generation through the submillimeter.
Blundell Ray
Gibson Heath
Hunter Todd Russell
Kimberk Robert
Paine Scott
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