Optical element, titanium oxide glass used for the optical element, and light emitting method and light amplifying method using titanium oxide glass

A technology of oxide glass and optical components, applied in the direction of optical components, optical, electrical components, etc., can solve the problems of low durability and easy deterioration of fluoride glass, and achieve the effect of high-intensity up-conversion luminescence

Inactive Publication Date: 2010-05-05
JAPAN AEROSPACE EXPLORATION AGENCY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, fluoride glass such as ZBLAN has a problem of low durability and easy deterioration

Method used

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  • Optical element, titanium oxide glass used for the optical element, and light emitting method and light amplifying method using titanium oxide glass
  • Optical element, titanium oxide glass used for the optical element, and light emitting method and light amplifying method using titanium oxide glass
  • Optical element, titanium oxide glass used for the optical element, and light emitting method and light amplifying method using titanium oxide glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] By suspension method, made of BaTi 2 o 5 A spherical glass sample with a basic composition and further addition of rare earth elements. The sample manufactured in this embodiment has the formula Ba 1-x1-x2-x3 Er x1 Yb x2 Ti y o z Glasses of the composition indicated. As shown in Table 1, samples 1-1 to 1-4 are samples in which Er is added as a rare earth element in the basic composition, and samples 1-5 to 1-11 are samples in which Er and Yb are added as rare earth elements in the basic composition sample.

[0078] (Procedure for manufacturing spherical glass by suspension method)

[0079] First, the raw material powders were weighed and mixed to obtain the respective compositions shown in Table 1. Next, the weighed oxide powder and ethanol were put into an agate mortar, wet-mixed (the first wet-mixing), and calcined. Specifically, the dried mixed powder was put into an electric furnace and calcined at 1000° C. for 12 hours to sinter the mixed powder. Thereaf...

Embodiment 2

[0093] Same as Example 1, by suspension method, make BaTi 2 o 5 A spherical glass sample with a basic composition and further addition of rare earth elements. The sample that present embodiment manufactures has formula Ba 1-x2-x3 Yb x2 T m x3 Ti y o z Glasses of the composition indicated. As shown in Table 1, samples 2-1 and 2-2 are samples in which only Tm is added as a rare earth element, and sample 2-3 is a sample in which both Tm and Yb are added as rare earth elements.

[0094] Differential thermal analysis (DTA) measurements were performed on the various samples produced by the method described above. From this result, it can be confirmed that these samples have a glass transition point and a crystallization temperature. That is, it was confirmed that all samples 2-1 to 2-3 of this example were glassy at room temperature. In addition, among samples 2-1 to 2-3, the DTA measurement results of sample 2-2 are as follows: Figure 8 shown.

[0095] Using the same ap...

Embodiment 3

[0097] Same as Example 1, by suspension method, make BaTi 2 o 5 A spherical glass sample with a basic composition and further addition of rare earth elements. The sample that present embodiment manufactures has formula Ba 1-x2 Yb x2 Ti y o z Glasses of the composition indicated. That is, spherical glasses of samples 3-1 to 3-3 in which only Yb was added as a rare earth element were manufactured and evaluated (see Table 1).

[0098] Differential thermal analysis (DTA) measurements were performed on the various samples produced by the method described above. Measurement results such as Figure 9 shown. From this result, it can be confirmed that these samples have a glass transition point and a crystallization temperature. That is, it was confirmed that all samples 3-1 to 3-3 of this example were glassy at room temperature.

[0099] Using the same apparatus and conditions as in Example 1, the spherical glass was irradiated with excitation light to study up-conversion lu...

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Abstract

An optical element of the present invention exhibits at least one of an upconversion emission characteristic and a light amplifying characteristic when irradiated with an excitation light. The optical element includes a bulk glass that contains titanium oxide as a main component, and the glass further contains a rare earth element. As the rare earth element, at least one element of Er and Yb, or a combination of Yb and Tm preferably is used, for example.

Description

technical field [0001] The present invention relates to an optical element exhibiting up-conversion light emission and / or light amplification characteristics, a titanium-based oxide glass used in the optical element, and a light-emitting method and a light amplification method using the titanium-based oxide glass. Background technique [0002] It is known that rare earth elements and some transition elements emit fluorescence when atoms excited from a high energy level relax to a low level under irradiation with excitation light. The light emitted with a longer wavelength than the excitation light is common fluorescence, but it is also possible to emit light with a shorter wavelength than the excitation light, which is called upconversion emission (upconversion emission). Up-converting luminescence means that, for example, before an atom in an excited state relaxes to a lower level, it absorbs light again and is excited to a high-energy state. When the atom migrates from thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C4/12C03C3/12G02B1/00H01L33/00H01S5/02H01L33/52
CPCH01S3/2308H01S3/16G02F1/37C03C3/127C03C4/12H01S3/1603H01L33/00
Inventor 橘高重雄津田正宏余野建定增野敦信荒井康智
Owner JAPAN AEROSPACE EXPLORATION AGENCY
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