摘要:
Phosphor 8 is attached to window portion 6 of housing vessel 7 in light-emitting diode 20. Blue excitation light 9 emitted from blue light-emitting diode chip 4 is irradiated on phosphor 8, and part of excitation light 9 is absorbed by phosphor 8, which converts its wavelength and produces yellow fluorescence 9a to be emitted outward from light-emitting diode 20. In addition, part of excitation light 9 also passes through phosphor 8 and becomes transmitted excitation light 9b, which is then emitted outward from light-emitting diode 20. Yellow fluorescence 9a and blue transmitted excitation light 9b blend to become white light 10.
摘要:
In an optical amplification characteristics simulation apparatus according to the present invention, using spectrums of a signal light input to an optical amplifier and a characteristic parameter for amplification medium, gain wavelength characteristics of the amplification medium are calculated. A calculating formula for the above has a parameter corresponding to a gain fluctuation portion due to a gain spectral hole burning (GSHB) phenomenon, and this parameter is defined by a function obtained by modeling a physical phenomenon in which a population inversion rate is reduced due to the GSHB, based on that electron occupation numbers in each Stark level on the end level side are increased. Then, based on the calculated gain wavelength characteristics, the output power of the signal light is obtained, to thereby perform the optical amplification characteristics simulation on the optical amplifier. As a result, it is possible to construct a high versatile calculation model based on the physical phenomenon for the gain fluctuation due to the GSHB, to thereby simulate with high precision the optical amplification characteristics of the optical amplifier under arbitrary conditions.
摘要:
Disclosed is a light-emitting device comprising a semiconductor excitation light source emitting blue-violet light and a solid material illuminant having an absorbent for the blue-violet light containing samarium (Sm). With such a constitution, the light-emitting device has high efficiency, long life and excellent color rendering properties.
摘要:
In an optical amplification characteristics simulation apparatus according to the present invention, using spectrums of a signal light input to an optical amplifier and a characteristic parameter for amplification medium, gain wavelength characteristics of the amplification medium are calculated. A calculating formula for the above has a parameter corresponding to a gain fluctuation portion due to a gain spectral hole burning (GSHB) phenomenon, and this parameter is defined by a function obtained by modeling a physical phenomenon in which a population inversion rate is reduced due to the GSHB, based on that electron occupation numbers in each Stark level on the end level side are increased. Then, based on the calculated gain wavelength characteristics, the output power of the signal light is obtained, to thereby perform the optical amplification characteristics simulation on the optical amplifier. As a result, it is possible to construct a high versatile calculation model based on the physical phenomenon for the gain fluctuation due to the GSHB, to thereby simulate with high precision the optical amplification characteristics of the optical amplifier under arbitrary conditions.
摘要:
An optical amplifying glass comprising a matrix glass and, added thereto, from 0.01 to 10 wt % of Er, characterized in that said matrix glass substantially comprises, as represented by mol %, 20 to 80 of Bi2O3, 0 to 74.89 of B2O3, 0 to 79.99 of SiO2, 0.01 to 10 of CeO2, 0 to 50 of Li2O, 0 to 50 of TiO2, 0 to 50 of ZrO2, 0 to 50 of SnO2, 0 to 30 of WO3, 0 to 30 of TeO2, 0 to 30 of Ga2O3 and 0 to 10 of Al2O3, with the proviso that said matrix glass contains at least one of B2O3 and SiO2.
摘要翻译:一种光学放大玻璃,其包括基体玻璃,并且添加有0.01至10重量%的Er,其特征在于,所述基质玻璃基本上包含以摩尔%表示的20至80的Bi 2 O 3,0至74.89的B 2 O 3,0 至79.99的SiO 2,0.01至10的CeO 2,0至50的Li 2 O,0至50的TiO 2,0至50的ZrO 2,0至50的SnO 2,0至30的WO 3,0至30的TeO 2,0至30 的Ga 2 O 3和0〜10的Al 2 O 3,条件是所述基体玻璃含有B 2 O 3和SiO 2中的至少一种。
摘要:
An optical amplifier glass comprising a matrix glass containing Bi2O3 and at least one of Al2O3 and Ga2O3, and Er doped to the matrix glass, wherein from 0.01 to 10% by mass percentage of Er is doped to the matrix glass which has a total content of Al2O3 and Ga2O3 of at least 0.1 mol %, a content of Bi2O3 of at least 20 mol %, a refractive index of at least 1.8 at a wavelength of 1.55 &mgr;m, a glass transition temperature of at least 360° C. and an optical basicity of at most 0.49.
摘要翻译:一种光学放大器玻璃,其包含含有Bi 2 O 3和Al 2 O 3和Ga 2 O 3中的至少一种的基体玻璃和掺杂到基体玻璃中的Er,其中以质量百分比计的Er掺杂到基体玻璃中,其总含量为 Al 2 O 3和Ga 2 O 3的摩尔比为至少0.1摩尔%,Bi 2 O 3的含量为至少20摩尔%,折射率在1.55μm的波长为至少1.8,玻璃化转变温度为至少360℃,光学碱度 最多为0.49。
摘要:
An optical amplifying glass comprising a matrix glass and from 0.001 to 10% by mass percentage of Tm doped to the matrix glass, wherein the matrix glass contains from 15 to 80 mol % of Bi2O3 and further contains at least one component selected from the group consisting of SiO2, B2O3 and GeO2.