Tunable diode laser with fast digital line selection
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United States of America Patent
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Aug 28, 2001
Grant Date -
N/A
app pub date -
Sep 14, 1998
filing date -
Sep 14, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved tunable diode laser is capable of fast digital line selection over a broad wavelength spectrum, and uses no moving parts. A focusing element, such as a mirror or a lens, used in combination with a micromirror array serves as the retroreflector in a typical Littman-Metcalf laser cavity. This configuration provides arbitrary, simultaneous, and/or sequential line selection capability over a very broad wavelength range. The use of an individually-controllable micromirror array eliminates the high precision mechanical motion of a grating element and improves the overall durability and ruggedness of the device. The present invention can be integrated into any diode laser and has significant application in spectroscopy.
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