Study of morphological feature and mechanism of potassium dihydrogen phosphate surface damage under a 351  nm nanosecond laser

2018 ◽  
Vol 57 (35) ◽  
pp. 10334 ◽  
Author(s):  
Zhichao Liu ◽  
Feng Geng ◽  
Yaguo Li ◽  
Jian Cheng ◽  
Hao Yang ◽  
...  
Keyword(s):  
Morphological Feature ◽  
Potassium Dihydrogen Phosphate ◽  
Surface Damage ◽  
Nanosecond Laser ◽  
Dihydrogen Phosphate ◽  
Potassium Dihydrogen

scholarly journals The relationship between the laser damaged threshold and step velocity in different supersaturation regions

RSC Advances ◽  
2018 ◽  
Vol 8 (64) ◽  
pp. 36453-36458
Author(s):  
Weidong Li ◽  
Yu Li ◽  
Shenglai Wang ◽  
Wenyong Cheng
Keyword(s):  
Potassium Dihydrogen Phosphate ◽  
Nanosecond Laser ◽  
Dihydrogen Phosphate ◽  
Potassium Dihydrogen ◽  
Step Velocity ◽  
The Relationship ◽  
Kdp Crystals

The laser damaged threshold (LDT) of potassium dihydrogen phosphate (KDP) crystals grown at different supersaturation points were investigated using a Nd:YAG nanosecond laser.

scholarly journals Off-line sub-nanosecond laser conditioning on large aperture deuterated potassium dihydrogen phosphate crystal

2021 ◽  
Vol 70 (7) ◽  
pp. 074208-074208
Author(s):  
Liu Zhi-Chao ◽  
◽  
Xu Qiao ◽  
Lei Xiang-Yang ◽  
Geng Feng ◽  
...  
Keyword(s):  
Potassium Dihydrogen Phosphate ◽  
Nanosecond Laser ◽  
Dihydrogen Phosphate ◽  
Potassium Dihydrogen ◽  
Large Aperture ◽  
Laser Conditioning

Surface Damage Analyse of KDP Crystal Grinding

2007 ◽  
Vol 24-25 ◽  
pp. 349-354
Author(s):  
Dong Jiang Wu ◽  
Xian Suo Cao ◽  
Hang Gao ◽  
Ren Ke Kang
Keyword(s):  
Information Technology ◽  
Crystal Surface ◽  
Potassium Dihydrogen Phosphate ◽  
Surface Damage ◽  
Energy Sources ◽  
Dihydrogen Phosphate ◽  
Kdp Crystal ◽  
Potassium Dihydrogen ◽  
The Press ◽  
Processing Material

The functional crystal material Potassium dihydrogen phosphate KH2PO4 (KDP for short) is widely used in navigate, spaceflight, national defenses, energy sources and information technology fields because of its excellent non-linear optical property. However, KDP crystal has some disadvantages such as soft, fragile, hygroscopic, anisotropy, thermally sensitive and low rigidity, which make it a most difficult processing material. In this paper, KDP crystal was machined by the wheel grinding. Some equipment, such as Optic microscope, SEM, ZYGO and Raman spectroscope were used to observe and analysis the KDP crystal surface which was damaged during grinding. The results shows that serious nicks, crashes and the press stress appeared on the surface of the KDP crystal after grinding.

scholarly journals Optical Absorption Spectra of Vanadyl Ion (Impurities) in Three Host Crystal Compounds

1985 ◽  
Vol 40 (11) ◽  
pp. 1164-1166
Author(s):  
O. P. Agarwal ◽  
Prem Chand
Keyword(s):  
Optical Absorption ◽  
Potassium Dihydrogen Phosphate ◽  
Optical Data ◽  
Dihydrogen Phosphate ◽  
Host Crystal ◽  
Optical Absorption Study ◽  
Potassium Dihydrogen ◽  
Vanadyl Complexes ◽  
Vanadyl Ion ◽  
Magnesium Ammonium

Results of the optical absorption study of vanadyl ion doped in magnesium ammonium sulphate hexahydrate, rubidium sulphate and potassium dihydrogen phosphate single crystals at RT are reported. The nature of optical bands suggests a C4v symmetry of the Vanadyl complexes in conformity with the EPR results. Powder EPR data and optical data are correlated to obtain the MO coefficients.

scholarly journals The Strain Rate Sensitivity and Creep Behavior for the Tripler Plane of Potassium Dihydrogen Phosphate Crystal by Nanoindentation

Micromachines ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 369
Author(s):  
Jianhui Mao ◽  
Wenjun Liu ◽  
Dongfang Li ◽  
Chenkai Zhang ◽  
Yi Ma
Keyword(s):  
Strain Rate ◽  
Strain Rate Sensitivity ◽  
Creep Deformation ◽  
Potassium Dihydrogen Phosphate ◽  
Rate Sensitivity ◽  
Dislocation Nucleation ◽  
Machining Process ◽  
Dihydrogen Phosphate ◽  
Potassium Dihydrogen ◽  
Kdp Crystals

As an excellent multifunctional single crystal, potassium dihydrogen phosphate (KDP) is a well-known, difficult-to-process material for its soft-brittle and deliquescent nature. The surface mechanical properties are critical to the machining process; however, the characteristics of deformation behavior for KDP crystals have not been well studied. In this work, the strain rate effect on hardness was investigated on the mechanically polished tripler plane of a KDP crystal relying on nanoindentation technology. By increasing the strain rate from 0.001 to 0.1 s−1, hardness increased from 1.67 to 2.07 GPa. Hence, the strain rate sensitivity was determined as 0.053, and the activation volume of dislocation nucleation was 169 Å3. Based on the constant load-holding method, creep deformation was studied at various holding depths at room temperature. Under the spherical tip, creep deformation could be greatly enhanced with increasing holding depth, which was mainly due to the enlarged holding strain. Under the self-similar Berkovich indenter, creep strain could be reduced at a deeper location. Such an indentation size effect on creep deformation was firstly reported for KDP crystals. The strain rate sensitivity of the steady-state creep flow was estimated, and the creep mechanism was qualitatively discussed.

Assessment of Structural Stability of Dye-Doped Potassium Dihydrogen Phosphate Under Shocked Conditions

2021 ◽  
Author(s):  
A. Sivakumar ◽  
S. Sahaya Jude Dhas ◽  
P. Sivaprakash ◽  
Abdulrahman I. Almansour ◽  
Raju Suresh Kumar ◽  
...  
Keyword(s):  
Structural Stability ◽  
Potassium Dihydrogen Phosphate ◽  
Dihydrogen Phosphate ◽  
Potassium Dihydrogen
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