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Ytterbium doped yttrium lithium tungstate of femtosecond pulsed laser crystal and method of producing the same

A technology of laser crystals and femtosecond pulses, which is applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve the problems of narrow absorption spectrum and unsuitability for LD pumping, etc., and achieve the advantages of easy processing and excellent optical properties Effect

Inactive Publication Date: 2008-12-10
黄新阳
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Problems solved by technology

However, it has the disadvantage of narrow absorption spectrum and is not suitable for pumping by LD, and LD pumping will be the development direction of laser pumping sources in the future.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Embodiment: 1. Molten salt method (high temperature top seed crystal method) growth Yb 3+ :β-LiY(WO 4 ) 2 The laser crystal adopts the molten salt method (high temperature top seed crystal method), with a molar ratio of 75% Li 2 W 2 o 7 As a flux, in the range of 800-890°C, at a cooling rate of 0.5-1°C / day, the growth cycle is about 34 days to grow high-quality, large-size 2.0×1.2×0.6cm 3 Yb 3+ :β-LiY(WO 4 ) 2 the crystal

[0014] Embodiment: 2. Molten salt method (high temperature top seed crystal method) growth Yb 3+ :β-LiY(WO 4 ) 2 The laser crystal adopts the molten salt method (high temperature top seed crystal method), with a molar ratio of 85% Li 2 W 2 o 7 As a flux, in the range of 800-880°C, with a cooling rate of 0.5-1°C / day, the growth cycle is about 28 days to grow high-quality, large-size 1.5×1.0×0.4cm 3 Yb 3+ :β-LiY(WO 4 ) 2 crystals.

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Abstract

The invention provides a femtosecond pulse laser crystal ytterbium-doped lithium ytterbium tungstate and a preparation method thereof. The invention is characterized in that: the method adopts a molten salt method and uses Li2W2O7 with a mol ratio of between 70 and 90 percent as a slagging medium to grow a Yb<3+>: beta-LiY(WO4)2 crystal with high quality and large dimension at a temperature of between 750 and 800 DEG C at a cooling rate of between 0.1 and 1 DEG C / day for about 30 days. The crystal is particularly applicable to a microchip laser crystal and a micro-laser. A solid laser produced by the crystal can be used in spectroscopy, biomedicine, military and other fields.

Description

technical field [0001] The invention relates to the field of artificial crystals and crystal growth in the technical field of optoelectronic functional materials, in particular to a femtosecond pulse laser crystal doped with ytterbium yttrium lithium tungstate and a preparation method thereof. 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 crystal is yttrium aluminum garnet (YAG) crystal doped with neodymiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/32C30B9/12C30B11/00H01S3/16
Inventor 黄新阳
Owner 黄新阳
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