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Neodymium ion-doped scandium oxide lutetium oxide mixed crystal laser material and preparation method thereof

A kind of scandium oxide lutetium oxide, laser material technology

Active Publication Date: 2016-07-06
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, laser scientists from all over the world are competing fiercely in the field of femtosecond lasers. The development of femtosecond laser technology is developing towards shorter pulses, which requires materials with larger emission bandwidths. Lu x sc 2-x o 3 Compared with the traditional YAG gain medium, the laser material has a wider emission cross-section and ultra-high thermal conductivity, which is exactly the laser gain medium that scientists urgently need, but Lu x sc 2-x o 3 The melting point of the material is very high, and the requirements for the crucible are very high with the traditional crystal growth method, and it is difficult to obtain a large-sized sintered product, so the development of a new Lu x sc 2-x o 3 Material preparation methods are imminent

Method used

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  • Neodymium ion-doped scandium oxide lutetium oxide mixed crystal laser material and preparation method thereof

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Effect test

Embodiment 1

[0019] According to the molecular formula, the ratio of raw materials is prepared by hot isostatic pressing method to prepare Nd: LuScO 3 , get x=1 in the proportioning of raw materials. First, high-purity Lu 2 o 3 、Sc 2 o 3 、Nd 2 o 3 The powder is weighed according to the above ratio, mechanically mixed evenly, sieved through a 200-mesh sieve, weighed, put into a circular mold with a diameter of 40mm, and pressed under a pressure of 3kPa, and the prepared block is put into a vacuum sintering furnace Medium, evacuated to 9 x 10 -4 Pa, heated to 1600°C, and kept for 3 hours to obtain a sample with a density of 90%; put the obtained sample with a density of 90% into a hot isostatic pressing furnace, pressurize to 200 MPa under an Ar gas atmosphere, and heat to 1800℃, holding for 5h, get high quality Nd:LuScO 3 Mixed Crystal Laser Materials Using Prepared Nd:LuScO 3 Mixed crystal, polished coating, laser cavity design, using 808nmLD pump to obtain 1064nm laser output.

Embodiment 2

[0021] According to the molecular formula, the ratio of raw materials is prepared by hot isostatic pressing method to prepare Nd: LuScO 3 , get x=1 in the proportioning of raw materials. First, high-purity Lu 2 o 3 、Sc 2 o 3 、Nd 2 o 3 The powder is weighed according to the above ratio, and after mechanical mixing, it is sieved through a 250-mesh sieve and weighed, then put into a circular mold with a diameter of 60mm and pressed under a pressure of 6kPa, and the prepared block is put into a vacuum sintering furnace In, evacuate to 1 x 10 -3 Pa, heated to 1800° C., and kept for 10 hours to obtain a sample with a density of 98%; put the obtained sample with a density of 98% into a hot isostatic pressing furnace, pressurize to 300 MPa under an Ar gas atmosphere, and heat to 2000°C, hold for 20h, get high quality Nd:LuScO 3 Mixed Crystal Laser Materials Using Prepared Nd:LuScO 3 Mixed crystal, polished coating, laser cavity design, using 808nmLD pump to obtain 1064nm lase...

Embodiment 3

[0023] According to the molecular formula, the raw material ratio is prepared by hot isostatic pressing method to prepare Nd:Lu 1.9 sc 0.1 o 3 , get x=1 in the proportioning of raw materials. First, high-purity Lu 2 o 3 、Sc 2 o 3 、Nd 2 o 3 The powder is weighed according to the above-mentioned ratio, and after mechanical mixing, it is weighed through a 225-mesh sieve and put into a square mold with a length of 80mm and a width of 80mm and pressed under a pressure of 5.5kPa, and the prepared block is put into In the vacuum sintering furnace, vacuumize to 5×10 -4 Pa, heated to 1700°C, and kept for 6.5h to obtain a sample with a density of 95%; put the obtained sample with a density of 95% into a hot isostatic pressing furnace, pressurize to 250MPa under an Ar gas atmosphere, and heat To 1900 ℃, keep warm for 12.5h, get high quality Nd:LuScO 3 Mixed Crystal Laser Materials Using Prepared Nd:LuScO 3 Mixed crystal, polished coating, laser cavity design, using 808nmLD pum...

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Abstract

The invention provides a neodymium ion doped scandium oxide and lutetium oxide mixed crystal laser material and a preparation method thereof. The molecular formula of the neodymium ion doped scandium oxide and lutetium oxide mixed crystal laser material is Nd: LuxSc(2-x)O3, wherein x ranges from 0.1 to 1.9; Nd<3+> is a typical four-level ion of which the lower laser level is far apart from a ground state, so that the pumping threshold is relatively small; the absorbing section and the emission section are relatively large, and thus Nd<3+> is a good laser gain medium. The Nd: LuxSc(2-x)O3 laser material with the outstanding optical property and thermal property is the best choice of the grain medium for generating ultra-short femtosecond pulse laser for an LED.

Description

technical field [0001] The invention belongs to laser materials, in particular to a neodymium ion-doped scandium oxide lutetium oxide mixed crystal laser material and a preparation method thereof. Background technique [0002] The development of solid-state lasers is to reduce the thermal effect of the laser medium material to improve the output power and output beam quality. The laser medium material of the solid-state laser has changed from a rod shape to a slab shape, and the pumping source has changed from a lamp to a laser diode. The laser diode spectrum matches the laser medium absorption spectrum, so that the thermal effect of the laser medium material in the solid laser pumped by the laser diode is greatly reduced, but in the pump energy absorbed by the laser medium material, a large part of the light energy is still converted into Heat energy is deposited inside the medium, and heat dissipation requires cooling its surface, which causes temperature gradients and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
Inventor 姜本学张阳张龙范金太张攀德毛小建
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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