By WDQ OPTICS | 18 June 2021 | 0 Comments
The Metal Ions For Stimulated Emission In Laser Crystal Research Are Discussed
The Metal Ions For Stimulated Emission In Laser Crystal Research Are Discussed
Laser crystal has the advantages of good optical uniformity, good mechanical properties, high physicochemical stability and good thermal conductivity. It can be used as the primary choice of solid-state laser materials. Therefore, it is widely used in industry, medical treatment, scientific research, communication, military and other fields. Such as laser weapons, laser ranging, laser target indication, laser detection, laser marking, laser processing, laser medical treatment, laser beauty and so on.
Solid state laser a laser that uses solid state laser data as working material. The solid working material selected for this kind of laser is made by doping metal ions with stimulated emission effect into the crystal. There are three main types of metal ions that can produce stimulated emission effect in solids:
1. Transition metal ions (such as Cr3 +);
2. Most lanthanide metal ions (such as Nd3 +, SM2 +, dy2 +);
3. Actinide metal ions (such as U3 +).
The main characteristics of these metal ions doped into the solid matrix are relatively wide useful absorption spectral band, relatively high fluorescence power, relatively long fluorescence lifetime and relatively narrow fluorescence spectral line, so they are prone to particle number rotation and stimulated emission. Artificial crystals used as laser crystal matrix mainly include corundum (naalsi2o6), yttrium aluminum garnet (y3al5, O12), calcium tungstate (CaWO4), calcium fluoride (CaF2), yttrium aluminate (YAlO3), lanthanum beryllate (la2be2o5), etc. High quality silicate optical glass is mainly used as glass matrix, such as commonly used barium crown glass and calcium crown glass. Compared with crystal matrix, the primary characteristics of glass matrix are convenient preparation and easy access to large-scale high-quality data.
The main requirement for crystal and glass matrix is easy to be doped with luminescent metal ions with activation effect; It has outstanding spectral characteristics, optical transmittance characteristics and high optical (refractive index) uniformity; It has physical and chemical characteristics suitable for long-time laser operation (such as thermal characteristics, anti deterioration characteristics, chemical stability, etc.). Ruby (Al2O3: Cr3 +) and neodymium doped yttrium aluminum garnet (YAG: Nd3 +) are typical representatives of crystal lasers. Neodymium glass laser is a typical representative of glass laser.
Laser crystal has the advantages of good optical uniformity, good mechanical properties, high physicochemical stability and good thermal conductivity. It can be used as the primary choice of solid-state laser materials. Therefore, it is widely used in industry, medical treatment, scientific research, communication, military and other fields. Such as laser weapons, laser ranging, laser target indication, laser detection, laser marking, laser processing, laser medical treatment, laser beauty and so on.
Solid state laser a laser that uses solid state laser data as working material. The solid working material selected for this kind of laser is made by doping metal ions with stimulated emission effect into the crystal. There are three main types of metal ions that can produce stimulated emission effect in solids:
1. Transition metal ions (such as Cr3 +);
2. Most lanthanide metal ions (such as Nd3 +, SM2 +, dy2 +);
3. Actinide metal ions (such as U3 +).
The main characteristics of these metal ions doped into the solid matrix are relatively wide useful absorption spectral band, relatively high fluorescence power, relatively long fluorescence lifetime and relatively narrow fluorescence spectral line, so they are prone to particle number rotation and stimulated emission. Artificial crystals used as laser crystal matrix mainly include corundum (naalsi2o6), yttrium aluminum garnet (y3al5, O12), calcium tungstate (CaWO4), calcium fluoride (CaF2), yttrium aluminate (YAlO3), lanthanum beryllate (la2be2o5), etc. High quality silicate optical glass is mainly used as glass matrix, such as commonly used barium crown glass and calcium crown glass. Compared with crystal matrix, the primary characteristics of glass matrix are convenient preparation and easy access to large-scale high-quality data.
The main requirement for crystal and glass matrix is easy to be doped with luminescent metal ions with activation effect; It has outstanding spectral characteristics, optical transmittance characteristics and high optical (refractive index) uniformity; It has physical and chemical characteristics suitable for long-time laser operation (such as thermal characteristics, anti deterioration characteristics, chemical stability, etc.). Ruby (Al2O3: Cr3 +) and neodymium doped yttrium aluminum garnet (YAG: Nd3 +) are typical representatives of crystal lasers. Neodymium glass laser is a typical representative of glass laser.
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