Continuously tunable external cavity diode laser
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United States of America Patent
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Issued Date -
Jun 22, 2006
app pub date -
Dec 21, 2004
filing date -
Dec 21, 2004
priority date (Note) -
Abandoned
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Abstract
A cavity-enhanced spectrometer light source comprises: i) an electrically pumped SCDL having first and second facets at least said first facet being anti-reflection coated, ii) a diffraction grating facing said first facet, iii) a collimating lens interposed between said facet and said diffraction grating, iv) means for translating said lens substantially perpendicular to the path of the light beam transmitted from said SCDL to said diffraction grating to provide coarse tuning of the emission wavelength of said SCDL, and v) means for altering at least one of the temperature of and current to said SCDL to provide fine tuning of the emission wavelength of said SCDL.
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