Phosphate Laser Neodymium Glass

A phosphate and neodymium glass technology, applied in the field of laser neodymium glass, can solve the problem of difficulty in meeting the requirements of high-power laser devices, and achieve the effects of small photoelastic coefficient, moderate stimulated emission cross section, and high fluorescence lifetime

Active Publication Date: 2021-07-27
CDGM GLASS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photoelastic coefficient of phosphate laser neodymium glass is generally 1.8×10 -12 / Pa above, it is difficult to meet the requirements of high-power laser devices

Method used

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  • Phosphate Laser Neodymium Glass
  • Phosphate Laser Neodymium Glass
  • Phosphate Laser Neodymium Glass

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0063] The preparation method of phosphate laser neodymium glass of the present invention comprises the following steps:

[0064] ① Select the glass formula and weigh each raw material;

[0065] ② Fully mix the raw materials evenly to form a mixture;

[0066] ③The temperature of the silicon carbide melting furnace is raised to 1100-1150°C, and the mixture is evenly added to the ceramic material tank in the silicon carbide melting furnace at 20-25Kg / h;

[0067] ④Introduce O into the ceramic material tank 2 +CC1 4 Mixed gas, the air flow is 1-2L / min;

[0068] ⑤ After stopping the ventilation, inject the molten glass into the platinum crucible, and clarify the molten glass at 1200-1250°C for 3-4 hours;

[0069] ⑥ Mechanically stir the molten glass at 1050-1100°C for 2-4 hours;

[0070] ⑦ Pour the prepared glass liquid into a graphite mold for finalization, annealing and cooling.

[0071] Next, the performance and testing method of the phosphate laser neodymium glass of the ...

Embodiment

[0116] Embodiments 1-20 of the present invention are shown in Table 1-2. The composition (mol percent) and photoelastic coefficient B (10 -12 / Pa), stimulated emission cross section σ(10 -20 cm 2 ), fluorescence lifetime τ (μs), acid resistance stability (D A ) and air bubbles. It should be noted that the following examples are merely examples for better understanding of the present invention, and do not limit the present invention in any way.

[0117] Table 1

[0118]

[0119] Table 2

[0120]

[0121] The glass of the above-mentioned embodiment 9 is processed into a 1cm thick sample, and its absorption spectrum is tested with a spectrophotometer to obtain the required absorption spectrum curve for its stimulated emission cross-section test calculation, such as Figure 5 shown.

[0122] The glass of the above-mentioned embodiment 9 is processed into a sample with a thickness of 1mm, and its fluorescence spectrum is measured with a fluorescence spectrometer to obtai...

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Abstract

The invention provides a phosphate laser neodymium glass with a smaller photoelastic coefficient. Phosphate laser neodymium glass, the composition of which is expressed in molar percentages, containing: P 2 o 5 : 30‑60%, MO: 10‑45%, Al 2 o 3 : 0.5‑8%, B 2 o 3 : 1‑10%, SiO 2 : 1‑10%, PbO: 1‑15%, Nd 2 o 3 : 0.1‑5%, R 2 O: 0‑15%, where R 2 O is for K 2 O, Na 2 O. Li 2 One or more of O, MO is one or more of BaO, MgO, ZnO, CaO and SrO. The invention makes the laser glass have a smaller photoelastic coefficient through a reasonable component distribution ratio, and the photoelastic coefficient B of the glass is 1.55×10 ‑12 Below / Pa, it also has the properties of high fluorescence lifetime and moderate stimulated emission cross-section, which is suitable for high-power laser devices.

Description

technical field [0001] The invention relates to a laser glass, in particular to a laser neodymium glass with a small photoelastic coefficient. Background technique [0002] In a laser device based on a rod-shaped laser neodymium glass amplifier, the excitation light source such as a xenon lamp is usually placed in the direction of the cylinder of the laser neodymium glass rod, and the pump light is injected into the interior of the neodymium glass rod through the cylinder to promote the inversion of the number of neodymium ion particles. Thus realizing laser amplification, such as figure 1 shown. Since the neodymium glass has a large absorption coefficient for the pump light, the energy of the pump light from the outer layer to the center of the circle decreases gradually after the outer layer absorbs the light, that is, the pump light energy of the outer layer of the circular section of the neodymium glass rod The energy is significantly higher than that of the pump light...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/074C03C3/072
CPCC03C3/072C03C3/074
Inventor 莫大洪于天来苏学剑
Owner CDGM GLASS LLC
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