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Tb3+ self-activated laser crystal, preparation method thereof and application in visible waveband solid laser

A solid-state laser and laser crystal technology, applied in the directions of lasers, laser parts, crystal growth, etc., can solve the problems of limited popularization and use of crystals with high optical quality, etc., and achieve the requirements of reducing precision control, high lattice concentration, wide width and so on. Effects of absorption and emission bands

Active Publication Date: 2019-04-19
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing self-activated laser crystals such as neodymium aluminum borate crystal [NdAl 3 (BO 3 ) 4 .NAB], but because of its non-identical melting, it is extremely difficult to obtain crystals with high optical quality, which limits its popularization and use

Method used

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  • Tb3+ self-activated laser crystal, preparation method thereof and application in visible waveband solid laser
  • Tb3+ self-activated laser crystal, preparation method thereof and application in visible waveband solid laser
  • Tb3+ self-activated laser crystal, preparation method thereof and application in visible waveband solid laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1: Ca 3 Tb 2 (BO 3 ) 4 The pulling method growth and application of laser crystal.

[0050] Weigh 77.01g of Tb separately 4 o 7 , 61.80g of CaCO 3 and 51.97 g of H 3 BO 3 , then mix and grind for 3 hours to become a uniform powder, press it into a cylindrical block (the diameter of the block is slightly smaller than the diameter of the crucible container) under a pressure of 4Gpa, then put it into a crucible, and put it into a sintering furnace at 1150 ° C Sintering at high temperature for 30 hours. Put the sintered block into the iridium crucible and put it into the pulling furnace for crystal growth, the growth atmosphere is N 2 gas. Heat to 1450°C to melt the material block and keep it warm for 2 hours to obtain a uniform melt, then slowly lower the fixed seed crystal vertically until it touches the liquid surface and start crystal growth, the growth temperature is 1410°C, and the pulling speed is 1.5mm / h , the rotation speed is 15rpm; the crystal ...

Embodiment 2

[0053] Example 2: Sr 3 Tb 2 (BO 3 ) 4 Growth and application of visible laser crystals by pulling method.

[0054] Weigh 71.78g of Tb respectively 4 o 7 , 85.03 g of SrCO 3 and 48.42 g of H 3 BO 3 , then mix and grind for 3 hours to become a uniform powder, press it into a cylindrical block (the diameter of the block is slightly smaller than the diameter of the crucible container) under a pressure of 4Gpa, then put it into a crucible, and put it into a sintering furnace at 1100 ° C Sintering at high temperature for 25 hours; put the sintered block into an iridium crucible and put it into a pulling furnace for crystal growth, and the growth atmosphere is N 2 gas. Heat to 1400°C to melt the material block and keep it warm for 2 hours to obtain a uniform melt, then slowly lower the fixed seed crystal vertically until it touches the liquid surface and start crystal growth, the growth temperature is 1360°C, and the crystal growth rate is 1.2mm / h , the rotation speed is 10...

Embodiment 3

[0057] Example 3: Ba 3 Tb 2 (BO 3 ) 4 Growth and application of visible laser crystals by pulling method.

[0058] Weigh 64.68g of Tb separately 4 o 7 , 102.41 g BaCO 3 and 43.63 g of H 3 BO 3 , then mix and grind for 3 hours to become a uniform powder, press it into a cylindrical block (the diameter of the block is slightly smaller than the diameter of the crucible container) under a pressure of 4Gpa, then put it into a crucible, and put it into a sintering furnace at 1050 ° C Sintering at high temperature for 30 hours; put the sintered block into an iridium gold crucible and put it into a pulling furnace for crystal growth, and the growth atmosphere is N 2 gas. Heat to 1350°C to melt the block and keep it warm for 2 hours to obtain a uniform melt, then slowly lower the fixed seed crystal vertically until it touches the liquid surface and start crystal growth. The growth temperature is 1310°C, and the pulling speed is 1mm / h. The rotation speed is 13rpm; the crystal ...

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Abstract

The invention discloses a Tb3+ self-activated laser crystal, a preparation method thereof and application in a visible waveband solid laser. The chemical general formula of the crystal is M3Tb2(BO3)4,wherein M is selected from at least one of Ca, Sr and Ba. The crystal is a biaxial crystal belonging to an orthorhombic system, and the space group is Pnma. The crystal belongs to a same-component melted compound, and can grow with a pulling method. The crystal is adopted as a gain medium, blue light semiconductor laser pumping with the emission wavelength near 488 nm is used, and visible solid laser output at the wavebands of 540-550 nm and 580-590 nm can be achieved.

Description

technical field [0001] The invention relates to the field of solid laser materials, in particular to a Tb 3+ Self-activated laser crystal and its preparation method and application. Background technique [0002] Self-activated laser crystals refer to crystals that contain active ions in the composition of the crystal itself, and the active ions are not doped in as dopant ions. Existing self-activated laser crystals such as neodymium aluminum borate crystal [NdAl 3 (BO 3 ) 4 .NAB], but because of its non-identical melting, it is extremely difficult to obtain crystals with high optical quality, which limits its popularization and use. [0003] Terbium ion (Tb 3+ ) has a rich energy level structure, using its 5 D. 4 → 7 f 4 and 5 D. 4 → 7 f 3 The transition can respectively realize the emission of yellow light in the 586nm band and green light in the 545nm band. Yellow and green lasers can be widely used in display, military, biomedicine and marine communication. ...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B15/00H01S3/16
CPCC30B15/00C30B29/22H01S3/1666
Inventor 秦皓然陈雨金黄艺东黄建华龚兴红林炎富罗遵度
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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