An organic crystal with an exceptionally large optical second-harmonic coefficient: 2-methyl-4-nitroaniline

Abstract

We have grown and measured the optical second-harmonic coefficient dijk of the new nonlinear crystal 2-methyl-4-nitroaniline (MNA). We find that the dijk are very large with d12 being 5.8 times larger than d31 of LiNbO3 giving a birefringence phase-matching figure of merit d2/n3 which is 45 times larger than LiNbO3. The other coefficient d11 is 40 times larger than LiNbO3, giving a huge figure of merit which is 2000 larger than LiNbO3.

Efficient growth techniques and properties of Benzophenone Single Crystals for NLO Applications:A Review

“…we can modify the physical properties of single crystals which tends to enhance bulk growth of organic crystals with less defects but from some literature survey tells that even by adding such dopants and functional groups may hardly control the defects in crystals and hence by adopting various growth techniques results in improvement in molecular alignment of the crystals and tend to modify the crystal quality and in its perfection. Thus in this review the mainly focused discussion is on growing large and perfect benzophenone single crystals for high-energy laser applications since it is a promising NLO material where the absorption is visible in the blue light region having a cut-off wavelength lower than 450nm [4,5,6] and it has nearly six times higher NLO efficiency than that of Potassium dihydrogen phosphate (KDP), a well-known inorganic NLO material [7,8]. …”

Structure of MAP:MNA, the 1:1 adduct between (R)-methyl 2-(2,4-dinitroanilino)propanoate (MAP) and 2-methyl-4-nitroaniline (MNA), a new nonlinear optical crystal

“…The optical nonlinearities of both MAP and MNA have been studied (Oudar & Hierle, 1977;Levine, Bethea, Thurmond, Lynch & Bernstein, 1979;Oudar & Zyss, 1982 collection. Of 1999 unique data measured, 313 were labeled 'weak' during the pre-scan sequence of the data collection, but 1783 were observed to have measurable intensity, and were included in the data analysis.…”

Structural, Linear, and Nonlinear Optical and Mechanical Properties of New Organic L-Serine Crystal

“…Amino acids family crystals possess high NLO efficiency because of their noncentrosymmetric space group and chiral carbon atom [3,4]. Second order molecular nonlinearity can be enhanced by large delocalized -electron system with strong donor and acceptor groups [5,6]. Amino acids contain a proton donor carboxyl acid (coo − ) group and the proton acceptor (NH 2 + ) with them.…”