Fiber laser and methods manufacture and use
First Claim
Patent Images
1. A fiber laser, comprising:
- a laser cavity having a first end and a second end, the laser cavity comprising a first reflector disposed at the first end of the laser cavity, a second reflector disposed at the second end of the laser cavity to create with the first reflector a resonant oscillator within the laser cavity, a gain fiber disposed between the first and second reflectors and configured and arranged to amplify a beam of light, a fiber polarization controller configured and arranged to alter polarization of light in fiber and disposed between the first and second reflectors to modify the polarization of light oscillating within the laser cavity, and an in-fiber polarizer disposed to receive light from the fiber polarization controller and polarize the received light;
a pump light source to provide a pump beam for the gain fiber; and
an outlet for removing an output beam from the laser cavity.
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Abstract
Fiber lasers include a fiber polarization controller to compensate for polarization variation In addition, fiber lasers include dual gain fibers to provide broader bandwidth for ultrashort pulse generation and amplification.
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Citations
28 Claims
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1. A fiber laser, comprising:
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a laser cavity having a first end and a second end, the laser cavity comprising a first reflector disposed at the first end of the laser cavity, a second reflector disposed at the second end of the laser cavity to create with the first reflector a resonant oscillator within the laser cavity, a gain fiber disposed between the first and second reflectors and configured and arranged to amplify a beam of light, a fiber polarization controller configured and arranged to alter polarization of light in fiber and disposed between the first and second reflectors to modify the polarization of light oscillating within the laser cavity, and an in-fiber polarizer disposed to receive light from the fiber polarization controller and polarize the received light;
a pump light source to provide a pump beam for the gain fiber; and
an outlet for removing an output beam from the laser cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A fiber laser, comprising:
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a laser cavity comprising a gain fiber;
a pump light source coupled to the laser cavity to provide a pump beam to the gain fiber;
an outlet from the laser cavity to provide an output beam; and
a frequency doubling unit to double the frequency of the output beam, the frequency doubling unit comprising a frequency doubling material capable of doubling the frequency of the output beam at a temperature of no greater than 40°
C. - View Dependent Claims (15, 16)
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17. A method for generating laser pulses, the method comprising:
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injecting a pump beam into a gain fiber disposed in a laser cavity to generate a laser beam within the cavity;
modifying the polarization of the laser beam in an optical fiber disposed in the cavity using a polarization controller;
directing the laser beam through an in-fiber polarizer after the polarization of the laser beam is modified by the polarization controller; and
coupling a portion of the laser beam out of the laser cavity to form an output beam. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A fiber laser, comprising:
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a laser cavity having a first end and a second end, the laser cavity comprising a first reflector disposed at the first end of the laser cavity, a second reflector disposed at the second end of the laser cavity to create with the first reflector a resonant oscillator within the laser cavity, a first gain fiber disposed between the first and second reflectors, and a second gain fiber disposed between the first gain fiber and the first reflector, wherein the first and second gain fibers have overlapping gain bandwidths with different peaks;
at least one pump light source to provide a pump beam for the first and second gain fibers; and
an outlet for removing an output beam from the laser cavity. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification