Blue and green laser oscillation method and device adopting the same
First Claim
1. A laser generation method comprising the steps of:
- pumping electrons of a first element to a first energy level by employing a first pumping energy, to thereby obtain an energy according to a first energy absorption; and
pumping electrons of a second element to a second energy level higher than said first energy level by employing said energy as a pumping source and thereby obtaining light energy according to a second energy absorption.
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Accused Products
Abstract
A blue and green laser generation method and device adopting the same wherein the method includes the steps of pumping an electron of a first element to a first energy level by employing a first pumping energy to thereby obtain an optoacoustic energy according to a first energy absorption; and pumping an electron of a second element to a second energy level being higher than the first energy level, by employing the optoacoustic energy as a pumping source, to thereby obtain blue and green lasers having a desired wavelength according to a second energy absorption. The device has a core having a predetermined refractive index and which is doped by an element for generating light in a band of a predetermined wavelength by means of energy absorption; and a cladding layer provided around the core and which has a refractive index different from that of the core. The core is doped using at least two elements, one having a higher energy level difference than the other, to thereby enable miniaturization of the device and the mass production of a high performance device having a single mode.
19 Citations
45 Claims
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1. A laser generation method comprising the steps of:
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pumping electrons of a first element to a first energy level by employing a first pumping energy, to thereby obtain an energy according to a first energy absorption; and pumping electrons of a second element to a second energy level higher than said first energy level by employing said energy as a pumping source and thereby obtaining light energy according to a second energy absorption. - View Dependent Claims (2, 3, 4)
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5. A laser device comprising:
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a core having a predetermined refractive index and which is doped by at least first and second elements, said second element for generating light in a band of a predetermined wavelength by means of energy absorption; and a cladding layer provided around said core, having a refractive index different from that of said core, wherein said second element has a higher energy level different from that of said first element and said second element is excitable by the energy emitted by said first element. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A blue and green laser generating device comprising:
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an optical fiber including a core doped by a first metal ion and a second metal ion having different energy level differences and a cladding layer provided around the core; two mirrors provided in a front and a back of said optical fiber so as to prepare a lasing resonance section of laser; and a pumping light source provided in the front of either of said two mirrors so as to inject a pumping light into the lasing resonance section, whereby an optoacoustic energy is generated from said first metal ion excited by said pumping light and an electron of said second element is excited by the generated optoacoustic energy so as to generate blue and green light in accordance with an energy absorption of the electron of said second element; and said blue and green light is changed into blue and green laser beams due to a resonance occurring in said resonance section. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification