Intracavity frequency-converted optically-pumped semiconductor laser
First Claim
1. A laser, comprising:
- an epitaxially-grown monolithic semiconductor multilayer structure having a surface-emitting gain-portion, said gain portion including a plurality of active layers spaced-apart by spacer layers and arranged to provide optical gain in a laser resonant-cavity;
said laser resonant-cavity having a resonator axis and being terminated by first and second mirrors, said laser resonant-cavity configured to include said gain-portion of said monolithic semiconductor multilayer structure;
a pump-radiation source arranged to deliver pump-radiation to said gain-portion of said monolithic semiconductor multilayer structure for generating laser-radiation in said laser resonant-cavity;
a birefringent filter located in said laser resonant-cavity for selecting a frequency of said laser-radiation within a gain bandwidth characteristic of the composition of said gain-portion of said monolithic semiconductor multilayer structure; and
an optically-nonlinear crystal located in said resonant-cavity and arranged to convert said selected frequency of laser-radiation to light of at least one different frequency, thereby providing frequency-converted radiation.
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Accused Products
Abstract
An intracavity, frequency-doubled, external-cavity, optically-pumped semiconductor laser in accordance with the present invention includes a monolithic surface-emitting semiconductor layer structure including a Bragg mirror portion and a gain portion. An external mirror and the Bragg-mirror portion define a laser resonant-cavity including the gain-portion of the semiconductor layer structure. A birefringent filter is located in the resonant-cavity for selecting a frequency of the laser-radiation within a gain bandwidth characteristic of semiconductor structure. An optically-nonlinear crystal is located in the resonant-cavity between the birefringent filter and the external mirror and arranged to double the selected frequency of laser-radiation.
102 Citations
20 Claims
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1. A laser, comprising:
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an epitaxially-grown monolithic semiconductor multilayer structure having a surface-emitting gain-portion, said gain portion including a plurality of active layers spaced-apart by spacer layers and arranged to provide optical gain in a laser resonant-cavity; said laser resonant-cavity having a resonator axis and being terminated by first and second mirrors, said laser resonant-cavity configured to include said gain-portion of said monolithic semiconductor multilayer structure; a pump-radiation source arranged to deliver pump-radiation to said gain-portion of said monolithic semiconductor multilayer structure for generating laser-radiation in said laser resonant-cavity; a birefringent filter located in said laser resonant-cavity for selecting a frequency of said laser-radiation within a gain bandwidth characteristic of the composition of said gain-portion of said monolithic semiconductor multilayer structure; and an optically-nonlinear crystal located in said resonant-cavity and arranged to convert said selected frequency of laser-radiation to light of at least one different frequency, thereby providing frequency-converted radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A laser, comprising:
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an epitaxially-grown monolithic semiconductor multilayer structure having a Bragg-mirror portion and a surface-emitting gain-portion, said gain portion including a plurality of active layers spaced-apart by spacer layers; an external mirror separated from the semiconductor multilayer structure and arranged such that said Bragg-mirror portion of said monolithic semiconductor multilayer structure and said external mirror define a laser resonant-cavity including said gain-portion of said monolithic semiconductor multilayer structure; a pump-radiation source arranged to deliver pump-radiation to the gain-portion of said monolithic semiconductor multilayer structure for generating laser-radiation in said laser resonant-cavity; a birefringent filter located in said laser resonant-cavity for selecting a frequency of said laser-radiation within a gain bandwidth characteristic of the composition of said gain-portion of said monolithic semiconductor multilayer structure; and an optically-nonlinear crystal located in said resonant-cavity between said birefringent filter and said external mirror and arranged to double said selected frequency of laser-radiation, thereby providing frequency-doubled radiation. - View Dependent Claims (10, 11)
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12. A laser, comprising:
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an epitaxially-grown monolithic semiconductor multilayer structure having a surface-emitting gain-portion, said gain portion including a plurality of active layers spaced-apart by spacer layers and arranged to provide optical gain in a laser resonant-cavity; said laser resonant-cavity having a resonator axis and being terminated by first and second mirrors, said laser resonant-cavity configured to include said gain-portion of said monolithic semiconductor multilayer structure; a pump-radiation source arranged to deliver pump-radiation to said gain-portion of said monolithic semiconductor multilayer structure for generating laser-radiation in said laser resonant-cavity, said laser-radiation having a fundamental frequency; and an optically-nonlinear crystal located in said resonant-cavity and arranged to convert said fundamental frequency of laser-radiation into at least one different frequency, thereby providing frequency-converted radiation.
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13. A laser, comprising:
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an epitaxially-grown monolithic semiconductor multilayer structure having a Bragg-mirror portion and a surface-emitting gain-portion, said gain portion including a plurality of active layers spaced-apart by spacer layers and arranged to provide optical gain in a laser resonant-cavity; an external mirror separated from the semiconductor multilayer structure and arranged such that said Bragg-mirror portion of said monolithic semiconductor multilayer structure and said external mirror define a laser resoneint-cavity including said gain-port ion of said monolithic semiconductor multilayer structure; a pump-radiation source arranged to deliver pump-radiation to said gain-portion of said monolithic semiconductor multilayer structure for generating laser-radiation in said laser resonant-cavity, said laser-radiation having a fundamental frequency; and an optically-nonlinear crystal located in said resonant-cavity and arranged convert said fundamental frequency of laser-radiation into at least one different frequency, thereby providing frequency-converted radiation.
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14. A laser, comprising:
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an epitaxially-grown monolithic semiconductor multilayer structure having a surface-emitting gain-portion, said gain portion including a plurality of active layers spaced-apart by spacer layers and arranged to provide optical gain in a laser resonant-cavity; said laser resonant-cavity having a resonator axis and being terminated by first and second mirrors, said laser resonant-cavity configured to include said gain-portion of said monolithic semiconductor multilayer structure; a pump-radiation source arranged to deliver pump-radiation to said gain-portion of said monolithic semiconductor multilayer structure for generating laser-radiation in said laser resonant-cavity; and a frequency-selective element located in said laser resonant-cavity for selecting a frequency of said laser-radiation within a gain bandwidth characteristic of the composition of said gain-portion of said monolithic semiconductor multilayer structure. - View Dependent Claims (18, 19, 20)
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15. An optical parametric oscillator, comprising:
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an epitaxially-grown monolithic semiconductor multilayer structure having a surface-emitting gain-portion, said gain portion including a plurality of active layers spaced-apart by spacer layers and arranged to provide optical gain in a laser resonant-cavity; said first laser resonant-cavity having a first resonator axis and being terminated by first and second mirrors, said laser resonant-cavity configured to include said gain-portion of said monolithic semiconductor multilayer structure; a pump-radiation source arranged to deliver pump-radiation to said gain-portion of said monolithic semiconductor multilayer structure for generating laser-radiation in said laser resonant-cavity said laser-radiation having a fundamental frequency; an optically-nonlinear crystal located in said resonant-fundlamental frequency of said laser-radiation to light of at least two different frequencies, one thereof being selected to provide signal-light for output; and a second resonant-cavity having a second resonator axis and being configured to cause oscillation of said signal-light through said optically non-linear crystal. - View Dependent Claims (16, 17)
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Specification