Loading patent…
AssigneeWisconsin Alumni Research Foundation
InventorsThad G. Walker, Bien Chann, Ian A. Nelson
Estimating the term…
A high power diode laser array system utilizes an external cavity to narrow the spectral width of a high power diode laser array to change the output power normally produced by the diode array from a broad spectrum to a very narrow spectrum. The power output of the laser array system is concentrated over a narrow spectral range which falls within the useable range for particular applications such as optical pumping of noble gas samples for magnetic resonance imaging. The output of the array is received by a collimating element, which collimates the light in a direction perpendicular to the direction of the length of the array of emitters and directs the light on a beam path to a diffraction grating which is oriented at an angle to the incident beam. A portion of the beam is directed from the diffraction grating to provide useable output light, and a portion of the light incident on the grating is directed back to be focused on the diode array to provide feedback to cause the diode array to preferentially lase at the wavelength of the light that is fed back. A polarization rotation element may be used to orient the polarization of the light passing through it to control the amount of feedback light.
A high power diode laser array system having narrow spectral width output comprising:
A method of narrowing the spectral width of the output of a high power diode laser array comprising multiple laser diode emitters arranged in approximately a straight line, comprising:
A high power diode laser array system having narrow spectral width output comprising:
A method of narrowing the spectral width of the output of a high power diode laser array comprising multiple laser diode emitters arranged in approximately a straight line, comprising:
Dependencies are inferred from the claim text.