1) laser optical glass homogeneity - refractive index of error of ± 2 * 10 (-6), Meanwhile, ordinary glass optical refractive index homogeneity of its error is ± 2 * 10 (-4); (2) in the last the loss through below 0.0015cm (-1); (3) Glass OH radicals and platinum were very low; a size of 500 mm * 300mm * 50mm neodymium doped glass laser cost of not less than 20,000 yuan yuan. Laser glass is a glass matrix for the solid-state laser materials. It is widely used in various types of solid-state laser optical devices, and into high-power and high-energy laser main laser materials. Laser glass and laser crystal compared to the major advantages : (a) easier preparation. Application Preparation of optical glass technology and improve and be highly transparent optical uniformity of the glass, easier system for a large size of the end of work on low-cost materials, and the large volume of high density of particles is activated for high-power and high-energy laser important favorable conditions. (2) glass substrate is susceptible to changes. Glass substrate composition and nature of changes in the scope, the activator to the types and quantity of it is not subject to restrictions, it is comparatively easy to develop into various characteristics with the series of laser glass varieties. (3) easy molding. Optical glass cold and hot forming process, laser glass for easy direct molding various shapes, such as rods, films, silk and other secret research into high-precision optical surface to adapt to a variety of device structure development needs. (4) Based on the characteristics of the glass structure, the short-range and long-range orderly disorder, Glass structural deficiencies of broken glass nature of the impact on small and easy to remove, so easy access to isotropic, Large Volume on the nature of the uniform material. Because Nd : glass can be produced at room temperature laser, temperature quenching effect of small, Optical pump absorption and luminescence efficiency string of high quantum efficiency is the main current of laser glass. Laser glass and the glass substrate by ion activation of two parts. Laser Glass various physical and chemical properties of the glass substrate by major decision, and its spectral properties is mainly by the activation of ion decision. But with the glass matrix activated ion mutual role So activated ion laser glass on the physical and chemical nature to a certain extent, glass matrix and its spectral properties of sometimes very important. As laser glass substrate glass, which is used for optical glass, But not any kind of glass optical access any activation ions are suitable for laser glass. Laser Glass necessary to meet those basic requirements? summed up in the following points : (1) activation of the ion luminescence institutions must have metastable, forming three or four levels can be vertical; metastable and requested a longer life expectancy, so that particle accumulation reached easily reverse. To enable laser glass high efficiency and low vibration, speaking from the energy sector, four is better than three-level energy. When the final state-level and the ground state energy levels between intervals greater than 1000 cm -1, at room temperature final state-level is almost empty, the room temperature can easily have pumped population inversion. Glass has been produced in the laser activation of ion, Nd3 + ion to the best of its four-level agencies, Laser transition with the final state to the ground state energy of about 1950 cm spacing. (2) laser glass is necessary for all appropriate series of spectral properties. Including the absorption spectrum nature of the request and the excitation light source of radiation within a gradual and more wide absorption band, high absorption coefficient, Absorption spectral bands with the radiation source with the peak as possible overlap, so to take full advantage of the exciting source of energy; spectra, and the general requirements for small bands of fluorescence and narrow, so the output is not scattered energy; To enhance the absorption of light energy to stimulate as much as possible into laser energy, also called fluorescence quantum efficiency as much as possible. internal energy loss as possible. (3) laser glass matrix necessary for a good transparency, especially for the absorption of laser wavelength to be as low as possible. The transparency of the glass matrix, we will be able to make optical pump energy to be fully activated ion absorbed into laser. Increased transparency reduce the matrix optical pump energy absorption, so laser glass temperature rises, which would bring a number of shortcomings. At present, the pump-band radiation at the most visible and near ultraviolet and infrared regions, So must choose in the region transparent material. Inorganic oxides to glass and fluoride glass more appropriate. If the glass matrix containing iron, copper, lead, manganese, diamonds and nickel and other transition metal compounds. UV to the near-infrared absorption is, would the transparency of the glass substrate decline. Caused the glass laser wavelength absorption is the major source of impurities. (4) laser glass must have good optical homogeneity. Laser optical glass uneven nature of the light through the glass surface wave after deformation and have bad way, promote its oscillation threshold or good decreased productivity, increased divergence angle. (5) laser glass must have good thermal stability of light pieces. Lasers work due to the non-activation of ion radiation losses and the transition matrix of glass UV, Infrared absorption of part-pump energy into making the glass temperature of heat. Meanwhile, due to absorption of heat and cooling conditions in the different rods will appear in the radial temperature gradient. In addition to these factors led to the laser optical glass homogeneity and lower impact laser performance, will be even laser glass thermal and mechanical properties not damaged. (6) laser glass is necessary for good physical and chemical properties. In addition to the above requirements, in order to facilitate the manufacture, processing and use, also called laser glass with a good of special chemical properties. These include the tendency to lose through the small, high chemical stability. A certain degree of mechanical strength and good light stability and thermal conductivity and so on. Lost through the high tendency of the glass to make glass manufacturers, especially the large glass production process more difficult
(1) laser optical glass homogeneity - refractive index of error of ± 2 * 10 (-6), Meanwhile, ordinary glass optical refractive index homogeneity of its error is ± 2 * 10 (-4); (2) in the last the loss through below 0.0015cm (-1); (3) Glass OH radicals and platinum were very low; a size of 500 mm * 300mm * 50mm neodymium doped glass laser cost of not less than 20,000 yuan yuan. Laser glass is a glass matrix for the solid-state laser materials. It is widely used in various types of solid-state laser optical devices, and into high-power and high-energy laser main laser materials. Laser glass and laser crystal compared to the major advantages : (a) easier preparation. Application Preparation of optical glass technology and improve and be highly transparent optical uniformity of the glass, easier system for a large size of the end of work on low-cost materials, and the large volume of high density of particles is activated for high-power and high-energy laser important favorable conditions. (2) glass substrate is susceptible to changes. Glass substrate composition and nature of changes in the scope, the activator to the types and quantity of it is not subject to restrictions, it is comparatively easy to develop into various characteristics with the series of laser glass varieties. (3) easy molding. Optical glass cold and hot forming process, laser glass for easy direct molding various shapes, such as rods, films, silk and other secret research into high-precision optical surface to adapt to a variety of device structure development needs. (4) Based on the characteristics of the glass structure, the short-range and long-range orderly disorder, Glass structural deficiencies of broken glass nature of the impact on small and easy to remove, so easy access to isotropic, Large Volume on the nature of the uniform material. Because Nd : glass can be produced at room temperature laser, temperature quenching effect of small, Optical pump absorption and luminescence efficiency string of high quantum efficiency is the main current of laser glass. Laser glass and the glass substrate by ion activation of two parts. Laser Glass various physical and chemical properties of the glass substrate by major decision, and its spectral properties is mainly by the activation of ion decision. But with the glass matrix activated ion mutual role So activated ion laser glass on the physical and chemical nature to a certain extent, glass matrix and its spectral properties of sometimes very important. As laser glass substrate glass, which is used for optical glass, But not any kind of glass optical access any activation ions are suitable for laser glass. Laser Glass necessary to meet those basic requirements? summed up in the following points : (1) activation of the ion luminescence institutions must have metastable, forming three or four levels can be vertical; metastable and requested a longer life expectancy, so that particle accumulation reached easily reverse. To enable laser glass high efficiency and low vibration, speaking from the energy sector, four is better than three-level energy. When the final state-level and the ground state energy levels between intervals greater than 1000 cm -1, at room temperature final state-level is almost empty, the room temperature can easily have pumped population inversion. Glass has been produced in the laser activation of ion, Nd3 + ion to the best of its four-level agencies, Laser transition with the final state to the ground state energy of about 1950 cm spacing. (2) laser glass is necessary for all appropriate series of spectral properties. Including the absorption spectrum nature of the request and the excitation light source of radiation within a gradual and more wide absorption band, high absorption coefficient, Absorption spectral bands with the radiation source with the peak as possible overlap, so to take full advantage of the exciting source of energy; spectra, and the general requirements for small bands of fluorescence and narrow, so the output is not scattered energy; To enhance the absorption of light energy to stimulate as much as possible into laser energy, also called fluorescence quantum efficiency as much as possible. internal energy loss as possible. (3) laser glass matrix necessary for a good transparency, especially for the absorption of laser wavelength to be as low as possible. The transparency of the glass matrix, we will be able to make optical pump energy to be fully activated ion absorbed into laser. Increased transparency reduce the matrix optical pump energy absorption, so laser glass temperature rises, which would bring a number of shortcomings. At present, the pump-band radiation at the most visible and near ultraviolet and infrared regions, So must choose in the region transparent material. Inorganic oxides to glass and fluoride glass more appropriate. If the glass matrix containing iron, copper, lead, manganese, diamonds and nickel and other transition metal compounds. UV to the near-infrared absorption is, would the transparency of the glass substrate decline. Caused the glass laser wavelength absorption is the major source of impurities. (4) laser glass must have good optical homogeneity. Laser optical glass uneven nature of the light through the glass surface wave after deformation and have bad way, promote its oscillation threshold or good decreased productivity, increased divergence angle. (5) laser glass must have good thermal stability of light pieces. Lasers work due to the non-activation of ion radiation losses and the transition matrix of glass UV, Infrared absorption of part-pump energy into making the glass temperature of heat. Meanwhile, due to absorption of heat and cooling conditions in the different rods will appear in the radial temperature gradient. In addition to these factors led to the laser optical glass homogeneity and lower impact laser performance, will be even laser glass thermal and mechanical properties not damaged. (6) laser glass is necessary for good physical and chemical properties. In addition to the above requirements, in order to facilitate the manufacture, processing and use, also called laser glass with a good of special chemical properties. These include the tendency to lose through the small, high chemical stability. A certain degree of mechanical strength and good light stability and thermal conductivity and so on. Lost through the high tendency of the glass to make glass manufacturers, especially the large glass production process more difficult |
User_Login 
User_Reg 
