Laser Crystal - An Overview
Laser Crystal - An Overview
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The most common laser-Lively rare earth ions and host media along with some typical emission wavelengths are revealed in the next table:
激光晶体的极化性能可能会影响输出激光束的质量和特性。有些激光晶体产生线性偏振光，这对某些应用可能有益。
Laser crystals are optical crystals �?typically solitary crystals (monocrystalline optical supplies) �?which are utilised as gain media for sound-point out lasers. Usually, They're doped with both trivalent scarce earth ions or transition metal ions.
激光晶体中活性离子的作用是什么？ 活性离子在激光晶体中负责通过受激发射产生激光光线。
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晶体的光学质量对激光器的有效运行至关重要。晶体中的缺陷或杂质可能导致光散射、吸收甚至损坏晶体。高光学质量确保了稳定和高质量的激光束。
激光晶体的损伤阈值与其能承受的最大光强有关，而不会遭受物理或结构损伤。高损伤阈值对于确保高功率激光应用的耐久性和长寿命至关重要。
g. a thin disk. As One more case in point, Q-switched lasers attain an increased inhabitants density inside the higher laser amount and are thus more sensitive to quenching results and Electricity transfer procedures; hence, a lower doping density is often appropriate for these gadgets. For high-electricity lasers, decrease doping densities in many cases are utilized to Restrict the density of heat generation, Even though thin-disk lasers perform greatest with extremely doped crystals. Numerous laser goods do not get website to the total efficiency possible because these specifics haven't been appropriately labored out.
The host crystal is a lot more than simply a method to repair the laser-active ions at selected positions in Room. Many Qualities on the host substance are crucial:
激光晶体的核心由固态晶体材料组成，通常掺杂了某些能够通过受激发射产生光放大的离子。这些离子的性质对激光晶体的性能起决定作用。
Those surfaces which happen to be handed from the laser beam are Ordinarily both oriented at Brewster's angle or have an anti-reflection coating.
主体材料中活性离子掺杂物的数量是关键因素。它影响了激光的效率和性能。过低的浓度可能导致低输出，过高的浓度可能导致消光效应，降低晶体的效率。
The medium must have a higher transparency (small absorption and scattering) while in the wavelength regions of pump and laser radiation, and excellent optical homogeneity. To some extent, this depends on the caliber of the material, determined by aspects on the fabrication course of action.
With That idea, a person would not have to have yet another saturable absorber crystal, to ensure that one may make extra compact Q-switched laser setups with decreased inner parasitic losses. Nonetheless, unwanted Unwanted side effects could also arise, including obtaining undesired valence states in the associated ions or Strength transfers.
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