Solid-state laser system and excimer laser system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G02F-001/37
H01S-003/30
H01S-003/067
G02F-001/35
출원번호
US-0912004
(2018-03-05)
등록번호
US-10095084
(2018-10-09)
발명자
/ 주소
Kobayashi, Yohei
Ito, Shinji
출원인 / 주소
The University of Tokyo
대리인 / 주소
Studebaker & Brackett PC
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
A solid-state laser system may include: a solid-state laser unit configured to output first pulsed laser light with a first wavelength and second pulsed laser light with a second wavelength; a first solid-state amplifier configured to receive the first pulsed laser light, and output third pulsed las
A solid-state laser system may include: a solid-state laser unit configured to output first pulsed laser light with a first wavelength and second pulsed laser light with a second wavelength; a first solid-state amplifier configured to receive the first pulsed laser light, and output third pulsed laser light with the first wavelength; a wavelength converter configured to receive the third pulsed laser light, and output harmonic light with a third wavelength; a second solid-state amplifier configured to receive the second pulsed laser light, and output fourth pulsed laser light with the second wavelength; a Raman laser unit configured to receive the fourth pulsed laser light, and output Stokes light with a fourth wavelength; and a wavelength conversion system configured to receive the harmonic light and the Stokes light, and output fifth pulsed laser light with a fifth wavelength converted in wavelength from the third wavelength and the fourth wavelength.
대표청구항▼
1. A solid-state laser system, comprising: a solid-state laser unit configured to output first pulsed laser light with a first wavelength and second pulsed laser light with a second wavelength;a first solid-state amplifier configured to receive the first pulsed laser light, and output third pulsed l
1. A solid-state laser system, comprising: a solid-state laser unit configured to output first pulsed laser light with a first wavelength and second pulsed laser light with a second wavelength;a first solid-state amplifier configured to receive the first pulsed laser light, and output third pulsed laser light with the first wavelength;a wavelength converter configured to receive the third pulsed laser light, and output harmonic light with a third wavelength;a second solid-state amplifier configured to receive the second pulsed laser light, and output fourth pulsed laser light with the second wavelength;a Raman laser unit configured to receive the fourth pulsed laser light, and output Stokes light with a fourth wavelength; anda wavelength conversion system configured to receive the harmonic light and the Stokes light, and output fifth pulsed laser light with a fifth wavelength converted in wavelength from the third wavelength and the fourth wavelength. 2. The solid-state laser system according to claim 1, wherein the first wavelength is in a range from 1032 nm to 1045 nm,the second wavelength is in a range from 1070 nm to 1093 nm,the harmonic light comprises fourth-harmonic light of the first pulsed laser light,the Raman laser unit comprises a diamond Raman laser unit,the Stokes light comprises second-Stokes light, andthe fifth wavelength is in a range from 193 nm to 194 nm. 3. The solid-state laser system according to claim 1, wherein the solid-state laser unit includes: a first fiber amplifier system including a ytterbium-doped silica fiber, and configured to output the first pulsed laser light; anda second fiber amplifier system including a ytterbium-doped silica fiber, and configured to output the second pulsed laser light. 4. The solid-state laser system according to claim 1, wherein the solid state laser unit includes: a single fiber amplifier system including a ytterbium-doped silica fiber, and configured to output the first pulsed laser light and the second pulsed laser light; andan optical device provided downstream of the single fiber amplifier system, and configured to branch the first pulsed laser light and the second pulsed laser light. 5. The solid-state laser system according to claim 4, wherein the solid-state laser unit further includes:a first oscillator configured to output first seed light with the first wavelength;a first laser light generator configured to receive the first seed light, and output sixth pulsed laser light with the first wavelength;a second oscillator configured to output second seed light with the second wavelength; anda second laser light generator configured to receive the second seed light, and output seventh pulsed laser light with the second wavelength, andwherein the single fiber amplifier system receives the sixth pulsed laser light and the seventh pulsed laser light. 6. The solid-state laser system according to claim 4, wherein the solid-state laser unit further includes:a first oscillator configured to output first seed light with the first wavelength;a second oscillator configured to output second seed light with the second wavelength; anda single laser light generator configured to receive the first seed light and the second seed light, and output sixth pulsed laser light with the first wavelength and seventh pulsed laser light with the second wavelength, andwherein the single fiber amplifier system receives the sixth pulsed laser light and the seventh pulsed laser light. 7. The solid-state laser system according to claim 1, wherein the first solid-state amplifier and the second solid-state amplifier each include one of a ytterbium-doped crystal and a ytterbium-doped ceramic. 8. The solid-state laser system according to claim 7, wherein the first solid-state amplifier includes one or more materials selected from a group consisting of Yb:Lu2O3, Yb:LuScO3, Yb:ScYLO, Yb:YScO3, Yb:Y2O3, Yb:Lu2SiO5, Yb:Sc2O3, Yb:CaF2, Yb:YLF, Yb:KGW, Yb:KYW, and Yb:YAG. 9. The solid-state laser system according to claim 7, wherein the second solid-state amplifier includes one or more materials selected from a group consisting of Yb:Lu2O3, Yb:LuScO3, Yb:ScYLO, Yb:YScO3, Yb:Y2O3, and Yb:Lu2SiO5. 10. The solid-state laser system according to claim 9, wherein the first solid-state amplifier includes one or more materials selected from a group consisting of Yb:Lu2O3, Yb:LuScO3, Yb:ScYLO, Yb:YScO3, Yb:Y2O3, and Yb:Lu2SiO5, andthe one or more materials of the first solid-state amplifier and the one or more materials of the second solid-state amplifier are the same as each other. 11. The solid-state laser system according to claim 1, wherein the Raman laser unit includes: an optical resonator configured to resonate the Stokes light; anda diamond crystal provided in an optical path of the optical resonator, and configured to generate the Stokes light. 12. The solid-state laser system according to claim 11, wherein a thickness of the diamond crystal in a direction intersecting the optical path of the optical resonator is in a range from 0.41 mm to 2 mm, anda length of the diamond crystal in a direction of the optical path of the optical resonator is 8 mm or less. 13. A solid-state laser system, comprising: a solid-state laser unit configured to output first pulsed laser light with a first wavelength and second pulsed laser light with a second wavelength;a single solid-state amplifier configured to receive the first pulsed laser light and the second pulsed laser light, and output third pulsed laser light with the first wavelength and fourth pulsed laser light with the second wavelength;an optical device provided downstream of the single solid-state amplifier, and configured to branch the third pulsed laser light and the fourth pulsed laser light;a wavelength converter configured to receive the third pulsed laser light branched by the optical device, and output harmonic light with a third wavelength;a Raman laser unit configured to receive the fourth pulsed laser light branched by the optical device, and output Stokes light with a fourth wavelength; anda wavelength conversion system configured to receive the harmonic light and the Stokes light, and output fifth pulsed laser light with a fifth wavelength converted in wavelength from the third wavelength and the fourth wavelength. 14. An excimer laser system, comprising: a solid-state laser unit configured to output first pulsed laser light with a first wavelength and second pulsed laser light with a second wavelength;a first solid-state amplifier configured to receive the first pulsed laser light, and output third pulsed laser light with the first wavelength;a wavelength converter configured to receive the third pulsed laser light, and output harmonic light with a third wavelength;a second solid-state amplifier configured to receive the second pulsed laser light, and output fourth pulsed laser light with the second wavelength;a Raman laser unit configured to receive the fourth pulsed laser light, and output Stokes light with a fourth wavelength;a wavelength conversion system configured to receive the harmonic light and the Stokes light, and output fifth pulsed laser light with a fifth wavelength converted in wavelength from the third wavelength and the fourth wavelength; andan excimer laser amplifier configured to receive the fifth pulsed laser light, and output pulsed laser light with the fifth wavelength. 15. An excimer laser system, comprising: a solid-state laser unit configured to output first pulsed laser light with a first wavelength and second pulsed laser light with a second wavelength;a single solid-state amplifier configured to receive the first pulsed laser light and the second pulsed laser light, and output third pulsed laser light with the first wavelength and fourth pulsed laser light with the second wavelength;an optical device provided downstream of the single solid-state amplifier, and configured to branch the third pulsed laser light and the fourth pulsed laser light;a wavelength converter configured to receive the third pulsed laser light branched by the optical device, and output harmonic light with a third wavelength;a Raman laser unit configured to receive the fourth pulsed laser light branched by the optical device, and output Stokes light with a fourth wavelength;a wavelength conversion system configured to receive the harmonic light and the Stokes light, and output fifth pulsed laser light with a fifth wavelength converted in wavelength from the third wavelength and the fourth wavelength; andan excimer laser amplifier configured to receive the fifth pulsed laser light, and output pulsed laser light with the fifth wavelength.
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