Transition metal ion concentration gradient doped zinc sulfide or zinc selenide and preparation method thereof

A transition metal ion, graded doping technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems affecting the output laser energy and repetition frequency, the explosion of laser dielectric materials, and the reduction of thermal effects, so as to reduce the probability of non-radiative transition. , the effect of weak electro-acoustic coupling and reduced temperature quenching effect

Inactive Publication Date: 2014-07-02
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The solid-state laser is developed towards the purpose of reducing 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 is changed from a rod shape to a slab shape, and the pumping source is changed from a lamp to a laser diode. The diode spectrum matches the absorption spectrum of the laser medium, which greatly reduces the thermal effect of the laser medium material in the solid-state laser pumped by the laser diode, but in the pump energy absorbed by the laser medium material, a large part of the light energy is still converted into heat energy It is deposited inside the medium, and heat dissipation requires cooling...

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  • Transition metal ion concentration gradient doped zinc sulfide or zinc selenide and preparation method thereof
  • Transition metal ion concentration gradient doped zinc sulfide or zinc selenide and preparation method thereof

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Embodiment 1

[0026] First, one end of the high-quality ZnS ceramics is evenly vapor-deposited with a metal Cr film, and then placed in a through-N 2 Diffusion at 860°C for 5 days in an atmosphere-protected ampoule to control Cr 2+ The doping concentration of ions, to obtain high-quality Cr 2+ Gradient ion concentration (10 16 ~10 20 ions / cm 3 ) doped zinc sulfide laser material, processed according to the Brewster angle, designed the laser cavity, and completed the laser experiment. figure 1 for Cr 2+ The absorption spectra of ions in ZnS and ZnSe materials and the corresponding pump light sources respectively.

Embodiment 2

[0028] First, one end of the high-quality ZnS ceramics is uniformly vapor-deposited with a metal Co film, and then placed in the H 2 High-temperature diffusion at 900 °C for 15 days in an atmosphere-protected ampoule to control Co 2+ The doping concentration of ions, to obtain high-quality Co 2+ Gradient ion concentration (10 16 ~10 20 ions / cm 3 ) doped zinc sulfide laser material, processed according to the Brewster angle, designed the laser cavity, and completed the laser experiment.

Embodiment 3

[0030] First, one end of high-quality ZnSe ceramics is uniformly vapor-deposited with a metal Fe film, and then placed in a vacuum ampoule and diffused at 1000°C for 10 days at high temperature to control Fe 2+ The doping concentration of ions, to obtain high-quality Fe 2+ Gradient ion concentration (10 16 ~10 20 ions / cm 3 ) doped ZnSe laser material, processed according to the Brewster angle, designed the laser cavity, and completed the laser experiment.

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Abstract

The invention discloses a transition metal ion concentration gradient doped zinc sulfide/ zinc selenide and a preparation method thereof. The active ion of the laser material is one or more of transition metal ions Tm<2+>, Cr<2+>, Co<2+> and Fe<2+>, and the doping concentration of the transition metal ions on two end surfaces of the laser material is in exponential distribution from high to low and is 10<16>-10<20> ions/cm<3>. The material has the characteristics of wide absorption and emission bandwidth and large absorption and emission section, and can obtain ultra-short and ultra-fast laser output with high peak power. One end of the laser material with large doping concentration is attached to a heat sink, so that heat energy generated when incident light enters the laser gain material can be quickly taken away, thus the heat effect produced by laser is reduced, and efficient laser output is achieved.

Description

technical field [0001] The invention relates to a laser material, in particular to a transition metal ion concentration gradient doped zinc sulfide / zinc selenide and a preparation method thereof. Background technique [0002] The mid-infrared (2-5μm) band is just in the two transmission windows (1-3μm, 3-5μm) of the atmosphere, and it is also located in the "molecular fingerprint area" and the "atmospheric window area", and covers the characteristics of many important atmospheric molecules Spectral lines can be widely used in remote sensing, ranging, guidance, communication, infrared photoelectric countermeasures and interference, gas detection, spectral analysis and laser medical treatment, etc., occupying an important position in the infrared band light source. At present, the main ways to realize 2-5 μm mid-to-far infrared solid-state laser are: difference frequency (DFG), optical parametric oscillation (OPO) and optical parametric amplification (OPA). These methods dete...

Claims

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Application Information

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IPC IPC(8): C09K11/56C09K11/88
Inventor 姜本学彭雅珮张龙范金太张阳
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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