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Self excited laser crystal sc-sr-Nd borate and its preparation

A laser crystal, self-activation technology, applied in crystal growth, solid-state lasers, chemical instruments and methods, etc., can solve the problems of high optical quality crystal difficulties, limited popularization, and inability to put into practical use, etc. The effect of stable growth process and excellent optical properties

Inactive Publication Date: 2004-07-07
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

The world's first self-activated laser crystal was discovered in 1972 (H.G.Danielmeyer, H.P.Weber, J.Quant.Electro.QE-8(1972) 805.), and then a number of self-activated laser crystals were discovered, but Because they all have various defects, they cannot be put into practical use
At present, the most famous self-activated laser crystal is neodymium aluminum borate crystal [NdAl 3 (BO 3 ) 4 , NAB], its laser experiment has been successful, 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0020] Embodiment 2: with Li 6 B 4 o 9 Growing NdSr for Flux 6 Sc(BO 3 ) 6 laser crystals.

[0021] The growth material is NdSr 6 Sc(BO 3 ) 6 : Li 6 B 4 o 9 =75:25 (weight ratio). Using the molten salt top seed method, in a φ60×50mm platinum crucible, the growth temperature is between 958→895°C, with a cooling rate of 2°C / day and a crystal rotation speed of 15 rpm, a crystal with a size of 30 ×28×15mm 3 High quality NdSr 6 Sc(BO 3 ) 6 crystals.

Embodiment 3

[0022] Embodiment 3: with LiBO 2 -LiF as a flux to grow NdSr 6 Sc(BO 3 ) 66 laser crystals.

[0023] The growth material is NdSr 6 Sc(BO 3 ) 6 : LiBO 2 :LiF=75:20:5 (weight ratio). Using the molten salt top seed method, in a φ60×50mm platinum crucible, the growth temperature is between 940→875°C, with a cooling rate of 3°C / day and a crystal rotation speed of 20 rpm, a crystal with a size of 26 ×23×16mm3 High quality NdSr 6 Sc(BO 3 ) 6 crystals.

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Abstract

A self-activating laser crystal NdSr6Sc(BO3)6 is prepared by pull method or molten-salt growth method, and has high quality and bigger size. It has a strong absorption peak at 808 nm position with 36.1 / cm of absorptivity, so it is suitable to use laser diode (LD) to pump. It also has a strong fluorescence emitting peak at 1060 nm position with 1.31X10 to the power -19 sq.cm of emitting transmition cross-section, so easily outputting 1060 nm laser.

Description

technical field [0001] The self-activated laser crystal scandium strontium neodymium borate and its preparation method relate to artificial crystals and crystal growth methods in the technical field of optoelectronic functional materials, in particular to a laser crystal material used as a working substance in solid-state lasers. Background technique [0002] The solid-state laser working substance is composed of matrix material and active ions. Its various physical and chemical properties are mainly determined by the matrix material, while its spectral characteristics and fluorescence lifetime are determined by the energy level structure of the active ion. Since the artificial ruby ​​pulse laser was successfully developed in 1960, hundreds of laser crystals have been discovered so far, but due to various reasons, there are only a dozen kinds of laser crystals that can really be used in practice. [0003] At present, the most widely used laser cryst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22H01S1/02
Inventor 林州斌王国富胡祖树
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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