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Dysprosium-doped strontium calcium molybdate green laser crystal and preparation method thereof

A technology of laser crystal and calcium molybdate, which is applied in the field of materials science, can solve problems such as the difficulty of converting laser operation, and achieve the effects of significant technological progress, easy availability of raw materials, and high conversion efficiency

Inactive Publication Date: 2016-10-26
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above technical problems in the prior art, the present invention provides a dysprosium-doped calcium strontium molybdate green laser crystal and a preparation method thereof. The dysprosium-doped calcium strontium molybdate green laser crystal and its The preparation method mainly solves the technical problem that the laser crystal material in the all-solid-state green laser used as an LD pump in the prior art is difficult to operate at room temperature

Method used

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  • Dysprosium-doped strontium calcium molybdate green laser crystal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 uses 75at.%K 2 Mo 2 O 7 And 25at.% MoO 3 The mixture is a flux, and the growth doping concentration is 1at.% Dy 3+ Dy 3+ :Sr 2 CaMoO 6 Laser crystal.

[0021] Growth material press Sr 2 CaMoO 6 : Flux = 0.45:0.55 (molar ratio) preparation, mixed with 1at% Dy 3+ ion. Using molten salt top seeding method, in a Φ60×50mm platinum crucible, the growth temperature is between 787℃→750℃, with a cooling rate of 1.5℃ / day and a crystal rotation speed of 30 revolutions / minute, the size of the 30×16×20mm 3 Of high quality Dy 3+ :Sr 2 CaMoO 6 Crystal. ICP (plasma emission spectroscopy) analysis shows that Dy in the crystal 3+ The ion content is 1.08at.%.

Embodiment 2

[0022] Example 2 uses 75at.%K 2 Mo 2 O 7 And 25at.% MoO 3 The mixture is a flux, which grows Dy 3+ Dy with ion concentration of 5at.% 3+ :Sr 2 CaMoO 6 Laser crystal.

[0023] Growth material is Sr 2 CaMoO 6 : Flux = 0.35: 0.65 (molar ratio), mixed with 5at.% Dy 3+ ion. Using molten salt top seeding method, in a Φ60×50mm platinum crucible, the growth temperature is 775℃→745℃, and the crystal speed is 25× at a cooling rate of 1℃ / day and 25 revolutions / min. 20×13mm 3 Dy 3+ :Sr 2 CaMoO 6 Crystal. ICP (plasma emission spectroscopy) analysis shows that Dy in the crystal 3+ The ion content is 5.1 at.%.

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Abstract

The invention discloses a dysprosium-doped strontium calcium molybdate green laser crystal. The molecular formula for the crystal is Dy<3+>:Sr2CaMoO6, which belongs to an orthorhombic system and a Pmm2 space group, crystal cell parameters are alpha=beta=gamma=90 DEG, a=8.1513 angstrom, b=5.7416 angstrom, c=5.8385 angstrom and Z=2. The invention also provides a method of preparing the above dysprosium-doped strontium calcium molybdate green laser crystal. A molten salt top-seeded solution growth method is adopted; K2Mo2O7-MoO3 serves as a fluxing agent; the growth parameters are: a cooling rate of 0.5 to 3 DEG C per day, growth temperature of 750 to 790 DEG C, and a rotation speed of 5 to 30 revolutions per minute; the Dy<3+>:Sr2CaMoO6 crystal grows; and the doping concentration of Dy<3+> is 1at.% to 15at.%. The crystal of the invention can be used as a laser working material in a solid-state laser, a flash or a laser diode is used as a pumping source, and green laser is excited and generated and outputted.

Description

Technical field [0001] The invention belongs to the field of materials science, and relates to an optoelectronic functional material, in particular a laser crystal material used as a working substance in an LD-pumped all-solid-state green laser, specifically a dysprosium-doped calcium strontium molybdate green Optical laser crystal and its preparation method. Background technique [0002] The LD-pumped all-solid-state laser (DPSSL) has attracted the attention of researchers due to its high efficiency, small size, long life, and good beam quality, and has become one of the hot spots in laser technology research. Among all solid-state visible lasers, green lasers have achieved the most rapid development due to their wide application in medical and health, precision machining, ocean exploration, military defense, information storage, lidar, and high-definition displays. The hot spot of laser research. [0003] At present, the main ways to achieve green laser output are: direct excit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16C30B9/12C30B29/32
CPCC30B9/12C30B29/32H01S3/1675
Inventor 张彦王洪超李雨萌徐家跃李杰夏土良
Owner SHANGHAI INST OF TECH
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