Transition metal doped zinc sulfide or zinc selenide planar waveguide material and preparation method

Abstract

The invention relates to a transition-metal-doped zinc sulfide or zinc selenide planar waveguide material and a preparation method. The transition-metal-doped zinc sulfide or zinc selenide planar waveguide material is characterized in that a YAG (yttrium aluminum garnet) or Al2O3 lath is respectively combined to two sides of transition-metal-ion-doped zinc sulfide or zinc selenide ceramic to form a sandwich planar waveguide structure, so that a heat-mirror effect of laser can be effectively controlled, and the intermediate infrared waveguide laser output is realized. By adopting the transition-metal-doped zinc sulfide or zinc selenide planar waveguide material, not only can the heat management be effectively realized by virtue of the sandwich composite structure, but also the mass production can be realized, and important significance on the development of a high-power laser technology and integrated optics can be realized.

Description

technical field

[0001] The invention relates to a laser gain material, in particular to a transition metal ion-doped zinc sulfide or zinc selenide planar waveguide material and a preparation method. Background technique

[0002] The mid-infrared (2-5μm) band is just in the two transmission windows of the atmosphere (1-3μm, 3-5μm), 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 lasers are: difference frequency (DFG), optical parametric oscillation (OPO) and optical parametric amplification (OPA). These methods ...

Examples

Embodiment 1

[0022] Firstly, high optical quality (mid-infrared transmittance up to 72% or more, transition metal ion doping concentration up to ~10 18 / cm 3 ) Cr 2+ : ZnS ceramics, the thickness is 2 mm, YAG is clamped on both sides, put into a vacuum hot-press furnace, keep the temperature at 850 ° C, and the pressure at 3 tons / cm 2 Under the conditions of hot pressing and compounding, heat preservation and pressure for 30 minutes, high-quality YAG+Cr 2+ : Planar waveguide laser materials with ZnS+YAG sandwich composite structure.

Embodiment 2

[0024] Firstly, high optical quality (mid-infrared transmittance up to 72% or more, transition metal ion doping concentration up to ~10 18 / cm 3 ) of Fe 2+ : ZnSe ceramics, thickness 5 mm, sandwiched Al on both sides 2 o 3 , put in N 2 In a hot press furnace under gas protection, at a high temperature of 900 ° C and 4 tons / cm 2 Hot-compression compounding under certain pressure conditions, heat preservation and pressure for 40 minutes, to obtain high-quality Al 2 o 3 +Fe 2+ :ZnSe+Al 2 o 3 Planar waveguide laser materials with sandwich composite structure.

Embodiment 3

[0026] Firstly, high optical quality (mid-infrared transmittance up to 72% or more, transition metal ion doping concentration up to ~10 18 / cm 3 ) Co 2+ : ZnS ceramic, thickness 3 mm, sandwiched Al on both sides 2 o 3 , put in H 2 In a hot press furnace under gas protection, at a temperature of 950°C and a pressure of 3.5 tons / cm 2 Under the conditions of high temperature hot pressing and compounding, heat preservation and pressure holding for 50 minutes, high quality Al 2 o 3 +Co 2+ :ZnS+Al 2 o 3 Planar waveguide laser materials with sandwich composite structure.

technical field

[0001] The invention relates to a laser gain material, in particular to a transition metal ion-doped zinc sulfide or zinc selenide planar waveguide material and a preparation method. Background technique

[0002] The mid-infrared (2-5μm) band is just in the two transmission windows of the atmosphere (1-3μm, 3-5μm), 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 lasers are: difference frequency (DFG), optical parametric oscillation (OPO) and optical parametric amplification (OPA). These methods ...

Examples

Embodiment 1

[0022] Firstly, high optical quality (mid-infrared transmittance up to 72% or more, transition metal ion doping concentration up to ~10 18 / cm 3 ) Cr 2+ : ZnS ceramics, the thickness is 2 mm, YAG is clamped on both sides, put into a vacuum hot-press furnace, keep the temperature at 850 ° C, and the pressure at 3 tons / cm 2 Under the conditions of hot pressing and compounding, heat preservation and pressure for 30 minutes, high-quality YAG+Cr 2+ : Planar waveguide laser materials with ZnS+YAG sandwich composite structure.

Embodiment 2

[0024] Firstly, high optical quality (mid-infrared transmittance up to 72% or more, transition metal ion doping concentration up to ~10 18 / cm 3 ) of Fe 2+ : ZnSe ceramics, thickness 5 mm, sandwiched Al on both sides 2 o 3 , put in N 2 In a hot press furnace under gas protection, at a high temperature of 900 ° C and 4 tons / cm 2 Hot-compression compounding under certain pressure conditions, heat preservation and pressure for 40 minutes, to obtain high-quality Al 2 o 3 +Fe 2+ :ZnSe+Al 2 o 3 Planar waveguide laser materials with sandwich composite structure.

Embodiment 3

[0026] Firstly, high optical quality (mid-infrared transmittance up to 72% or more, transition metal ion doping concentration up to ~10 18 / cm 3 ) Co 2+ : ZnS ceramic, thickness 3 mm, sandwiched Al on both sides 2 o 3 , put in H 2 In a hot press furnace under gas protection, at a temperature of 950°C and a pressure of 3.5 tons / cm 2 Under the conditions of high temperature hot pressing and compounding, heat preservation and pressure holding for 50 minutes, high quality Al 2 o 3 +Co 2+ :ZnS+Al 2 o 3 Planar waveguide laser materials with sandwich composite structure.

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