Coherent light generators – Particular resonant cavity – Plural cavities
Reexamination Certificate
2008-05-07
2009-12-15
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular resonant cavity
Plural cavities
C372S068000
Reexamination Certificate
active
07633991
ABSTRACT:
An ultra-low heat laser that does not rely on florescence cooling. Generally, the inventive laser includes a pump source operable at a pump frequency and a gain medium disposed to receive energy from the source and lase at a frequency close to the pump frequency. In the illustrative embodiment, the laser is a solid state laser having a gain medium which is resonantly pumped to lase at a frequency within 5% of the pump frequency. However, in the best mode and in accordance with the present teachings, the gain medium lases at a frequency within 1% of the pump frequency. In the illustrative embodiment, the laser gain medium ion has a rich Stark energy level structure and the laser active gain medium has oscillator strengths at transitions wavelengths that allow an ultra-low quantum defect operation. The pump source has a wavelength output centered to correspond to a predetermined pump band and an emission band subtended by an absorption bandwidth thereof.
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Pillsbury Winthrop Shaw & Pittman LLP
Raytheon Company
Rodriguez Armando
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