Increasing pulse-to-pulse radiation beam uniformity
First Claim
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1. A system, comprising:
- a first oscillator configured to generate a radiation beam;
a beam conditioning device configured to stabilize a divergence of the radiation beam to produce a conditioned beam; and
a second oscillator configured to amplify the conditioned beam to produce an amplified beam having substantially less divergence than the radiation beam.
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Abstract
A system is used to substantially reduce divergence of a beam traveling between master and power oscillators, for example in a laser beam source. The system comprises the first and second oscillators and a beam conditioning device. The first oscillator is configured to generate a radiation beam. The beam conditioning device is configured to stabilize a position, a direction, a size, or a divergence of the radiation beam to produce a conditioned beam. The second oscillator configured to amplify the conditioned beam to produce an amplified beam.
24 Citations
48 Claims
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1. A system, comprising:
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a first oscillator configured to generate a radiation beam; a beam conditioning device configured to stabilize a divergence of the radiation beam to produce a conditioned beam; and a second oscillator configured to amplify the conditioned beam to produce an amplified beam having substantially less divergence than the radiation beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 34)
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10. A lithography system, comprising:
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an illumination system configured to generate an illumination beam of radiation, comprising, a first oscillator configured to generate a radiation beam; a beam conditioning device configured to stabilize a divergence of the radiation beam to produce a conditioned beam; and a second oscillator configured to amplify the conditioned beam to produce an illumination beam of radiation having substantially less divergence than the radiation beam; a patterning device that patterns the illumination beam of radiation; and a projection system that projects the patterned beam onto a target portion of a substrate. - View Dependent Claims (11, 12, 13, 14, 15, 35)
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16. A method, comprising:
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(a) generating a radiation beam using a first oscillator; (b) stabilizing a divergence of the radiation beam to produce a conditioned beam using a beam conditioning device; and (c) amplifying the conditioned beam using a second oscillator such that an amplified beam has substantially less divergence than the radiation beam. - View Dependent Claims (17, 18, 19, 20, 21, 36)
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22-33. -33. (canceled)
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37. A laser, comprising:
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a first oscillator configured to generate a radiation beam; a beam conditioning device configured to stabilize a divergence of the radiation beam to produce a conditioned beam; and a second oscillator configured to amplify the conditioned beam to produce an amplified beam having substantially less divergence than the radiation beam. - View Dependent Claims (38, 39, 40, 41)
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42. An illuminator, comprising:
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a first oscillator configured to generate a radiation beam; a beam conditioning device configured to stabilize a divergence of the radiation beam to produce a conditioned beam; a second oscillator configured to amplify the conditioned beam to produce an amplified beam having substantially less divergence than the radiation beam; and an optical system configured to process the amplified beam to produce a processed beam. - View Dependent Claims (43, 44, 45, 46, 47, 48)
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Specification