Application of KHgI3*H2O crystals in second-order non-linear optical field
A second-order nonlinear and triiodomercuric potassium technology, which is applied in the field of inorganic chemistry, can solve the problems that cannot meet the practical requirements of nonlinear optical crystal materials, it is not easy to grow large single crystals with optical quality, and the synthesis conditions are harsh. Mild, well-integrated, easy-to-operate effect
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Embodiment 1
[0027] Example 1: KHgI 3 ·H 2 Preparation of O:
[0028] 0.1660g (1mmol) KI and 0.4544g (1mmol) HgI 2 Add it into an appropriate amount of acetone solution, stir at 80 degrees Celsius until it becomes a clear and transparent solution, and continue to react for 24 hours. After the reaction is completed, cool naturally. Through the slow volatilization method at room temperature or the slow cooling method, yellow transparent crystals are obtained, which is the desired crystal material.
Embodiment 2
[0029] Example 2: KHgI 3 ·H 2 Powder frequency doubling effect of O:
[0030] The frequency doubling performance of the material is obtained by the Kurtz-Perry powder frequency doubling test method. The specific operation steps are as follows:
[0031] Grind the obtained second-order nonlinear optical crystal material into a powder with a particle size of about 80-100 microns, and then install it in a sample cell with glass windows on both sides, then place the sample cell on the laser optical path, and use Nd:YAG pulsed laser to The light source produces fundamental frequency light with a wavelength of 1064 nanometers and injects it into the sample cell. The KDP single crystal powder with a particle size of about 80-100 microns is used as a standard sample, and the signal is displayed on the oscilloscope through a photomultiplier tube.
Embodiment 3
[0032] Example 3: KHgI 3 ·H 2 O's frequency doubling effect phase matching test:
[0033] The obtained second-order nonlinear optical crystal materials were respectively ground and sieved into powders of different particle size ranges (20-40, 40-60, 60-80, 80-100, 100-125, 125-150, 150-200 and 200-300 Micron), and then installed in the sample cell with glass windows on both sides, then put the sample cell on the laser optical path, use Nd:YAG pulsed laser as the light source to generate fundamental frequency light with a wavelength of 1064 nanometers into the sample cell, and the signal is photoelectrically multiplied The tube is displayed on the oscilloscope, and the intensity of the frequency-multiplied signal of different particle sizes is tested. After drawing, analyze and judge whether the compound can be phase-matched.
[0034] figure 1 is KHgI 3 ·H 2 Stick model diagram of O crystal, mercury and four iodine atoms form a distorted tetrahedral HgI 4 2- Groups, they...
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