Details, Fiction and Magneto-Optical Crystal
Details, Fiction and Magneto-Optical Crystal
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This impact can seriously Restrict the performance of nonlinear frequency conversion processes, specially when employing tightly concentrated laser beams.
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直光纤只有很小的随机双折射，即使这样其中的光传输一段距离后偏振状态也会发生变化。存在保偏光纤，是利用了很强的双折射来抑制这些效应。
Birefringent products are of excellent importance to the event of modern optical technological innovation; however, study on halide birefringent crystals with a wide clear selection stays constrained.
The standard and remarkable wavefronts in uniaxial crystals coincide at possibly the slow or perhaps the speedy axis in the ellipsoid, dependent on the distribution of refractive indices within the crystal (illustrated in Determine six). The optical path difference or relative retardation concerning these rays is decided through the lag of 1 wave at the rear of another in area wavefronts along the propagation way.
类似的，激光光束在存在热效应诱导的双折射效应的激光器晶体中传输时，偏振态也发生变化。这一变化与位置有关，因为双折射轴方向是变化的（例如，通常是轴向变化）。这一变化（与激光器谐振腔中的偏振光元件结合）是去极化损耗的来源。
The conduct of a normal mild ray within a birefringent crystal could be described in terms of a spherical wavefront based upon the Huygens' theory of wavelets emanating from some extent supply of light-weight in a very homogeneous medium (as illustrated in Determine 5). The propagation of such waves by an isotropic crystal takes place at constant velocity as the refractive index expert with the waves is uniform in all directions (Figure five(a)).
The phrase birefringence is typically also made use of being a quantity (see more info down below), commonly outlined as being the difference between remarkable and everyday refractive index at a certain optical wavelength.
双折射是光束入射到各向异性的晶体，分解为两束光而沿不同方向折射的现象。光在非均质体中传播�?，其传播速度和折射率值随振动方向不同而改变，其折射率值不止一个；光波入射非均质体，除特殊方向以外 ，都要发生双折射，分解成振动方向互相垂直、传播速度不同、折射率不等的两种偏振光，此现象即为双折�?。
For extraordinary waves, in which the refractive index relies on the angular orientation, There exists a spatial stroll-off: the direction of electric power propagation is a little tilted versus that on the k vector.
而在非线性光学和激光器技术中，双折射则是一些非各向同性透明介质的折射率依赖于偏振方向（即电场方向）的性质。后者的性质时非偏振光束入射到该材料上时产生双折射。
这一效应可应用于双折射调谐器中，因为它是与波长相关的（尽管折射率差与波长无关）。该效应通过自相位调制和交叉相位调制而与功率相关（参阅非线性偏振态旋转），有时用于光纤激光器中的被动锁模。
Microscopists classically make reference to this orientation as remaining a placement of extinction for your crystal, which is important being a reference point for analyzing the refractive indices of anisotropic supplies that has a polarizing microscope. By removing the analyzer inside of a crossed polarizing microscope, the single permitted path of sunshine vibration passing through the polarizer interacts with only one electrical part from the birefringent crystal.
EKSMA Optics has many sorts of birefringent crystal resources which includes several nonlinear crystals, many of our laser crystals and Raman crystals and polarizing optics crystals.
No, which has very little to do with optical nonlinearities. It only implies that the refractive index turns into dependent on the spatial way.