The laser rod of the laser is mainly a solid based on yttrium aluminum garnet crystal, and can be classified into Nd:YAG crystal, Ce:Nd:YAG crystal, Yb:YAG crystal and the like. At present, laser rods used in laser marking machines, laser cutting machines and other industrial laser equipment are generally ND:YAG crystals.
1. The tunable laser rod can be tuned by a laser wavelength within a certain range by virtue of the transitional metal ion dd transition which is susceptible to the lattice field. Cr3+: LiCaAlF6 and Cr3+: LiSrAlF6 are currently the best tunable laser crystals doped with Cr3+ with a tuning range of 0.78~1.01um. The former two crystals have good mechanical properties and the latter have good laser performance.
2. New wavelength laser rod, medium-infrared crystal with wavelength of 2~3um, such as Er1.5Y1.5Al5O12 (2.94um), due to the absorption coefficient of water for this wavelength is 1 (compared to 1.04um only 10-4), so 3um Lasers are widely used in medicine.
3. Laser crystals for semiconductor lasers and small lasers, semiconductor superlattices, quantum trap materials An important application in optoelectronic technology is the fabrication of semiconductor quantum well lasers (QWLDs). QWLD is widely used due to its high efficiency (60%), small size, reliability and excellent cost.
4. High average power density laser rods. The lasers currently used for industrial processing are mainly CO2 lasers and Nd:YAG lasers. Due to the use of high-power semiconductor lasers as pump sources, multi-rod serial combination systems are used in the structure. The Nd:YAG laser output is achieved at a high average power density of kilowatts.
High reliability hot pressing inlay machine, designed for 7x24 hour operating environment
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