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Research on Nonlinear Absorption Effect in KDP and 70%-DKDP Crystals
- Source :
- Crystals, Vol 7, Iss 7, p 188 (2017), Crystals; Volume 7; Issue 7; Pages: 188
- Publication Year :
- 2017
- Publisher :
- MDPI AG, 2017.
-
Abstract
- Nonlinear optical absorption effect in KDP and 70%-DKDP crystals, which were grown by the conventional temperature cooling method, was systematically studied using picosecond pulse laser excitation. Using open aperture Z-scan measurements, the dependence of nonlinear absorption effect on sample orientations (I, II, and z) as well as laser intensity was systematically measured at λ = 1064 and 532 nm. According to the experimental results, the nonlinear absorption effect at λ = 532 nm was confirmed, while at λ = 1064 nm no nonlinear absorption was observed for KDP and 70%-DKDP crystals. In addition, the optical absorption along I- and II-type affected by laser intensity was larger than that along the z-direction. The important nonlinear absorption coefficients β and χ I ( 3 ) (esu) measured along different orientations were exhibited in detail at wavelengths of 1064 nm and 532 nm. The results indicate that nonlinear absorption coefficients increase first and then decrease with the increment of laser intensity for KDP and 70%-DKDP crystals.
- Subjects :
- Materials science
Z-scan
General Chemical Engineering
02 engineering and technology
01 natural sciences
Two-photon absorption
Molecular physics
law.invention
010309 optics
Inorganic Chemistry
Nonlinear optical
Optics
law
0103 physical sciences
KDP and 70%-DKDP crystals
lcsh:QD901-999
General Materials Science
Z-scan technique
Absorption (electromagnetic radiation)
nonlinear absorption effect
Nonlinear absorption
business.industry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Laser
Wavelength
lcsh:Crystallography
0210 nano-technology
business
Excitation
Subjects
Details
- Language :
- English
- ISSN :
- 20734352
- Volume :
- 7
- Issue :
- 7
- Database :
- OpenAIRE
- Journal :
- Crystals
- Accession number :
- edsair.doi.dedup.....a4d23c2499b88bfcc09182b5e75028f2