Growth, HRXRD, Microhardness and Dielectric Studies on the NLO Material L-Alaninium Maleate

Abstract

The single crystals of the NLO material, L-Alaninium maleate were grown by using the submerged seed solution method. The identity of the crystal was confirmed by single crystal X-ray diffraction. The crystalline perfection was analyzed using high resolution X-ray diffraction and it was found that the crystalline perfection is quite good. The values of the laser damage threshold and the Vicker's microhardness are in the higher range. The dielectric studies at different temperatures showed that the dielectric constant and dielectric loss have low values at higher frequencies and these values are independent of the temperature. The details are presented and discussed.

Key aspects ofl-threoninium picrate single crystal: an excellent organic nonlinear optical material with a high laser-induced damage threshold

“…Laser damage threshold value for grown LTP crystal was measured using single shot laser pulses from Nd:YAG laser source with 10 ns pulse width and at 10 Hz repetition rate. [17][18][19] 2.2.5 Birefringence analysis. Optical homogeneity and birefringence of the crystal was evaluated using modied channel spectrum (MCS) experimental setup, which was based on the principle of channelled spectra.…”

“…The energy density was calculated using the formula E/A where E is the input energy and A is the area of circular spot. 17,18 The value obtained for 1 pulse per second is tabulated in Table 1. LTP was observed to possess reasonably high laser damage threshold value compared to other well-known organic and inorganic crystals, such as KDP and urea, used for NLO applications.…”

Single crystal growth of ninhydrin by unidirectional Sankaranarayanan–Ramasamy (SR) method by using a glass ampoule for nonlinear optical applications

“…In the present study, the laser damage threshold (LDT) of the title compound has been determined by using a Nd:YAG laser having the wavelength of 1064 nm with 10 ns pulse width (FWHM) and at 10 Hz repetition rate. The energy density was calculated using the formula E/A (J cm 22 ), 13 where E is the input energy in millijoule (mJ) and A is the area of the circular spot. The laser damage density of ninhydrin was found to be 3.5 J cm 22 .…”

Growth, physiochemical and NLO properties study of novel L-alanine tri-sodium citrate single crystal

“…The inclusive optical characterstics of LA were described by L. Mosoguti et al, and the reported the modest SHG efficiency of LA, which was one-third of pure KDP crystal along with analogous hardness and thermal expansion to supplementary organic crystals [12]. Later, various researcher reported the growith of L-alanine tetrafluoroborate [13], L-alaninium oxalate complex [14], L-alanine acetate with the pH of 3.0 [15], L-alaninium maleate (LAM) with the size of 19 × 6 × 5 mm 3 with SHG efficiency 0.8 times that of KDP [16], L-alanine hydrochloride monohydrate with SHG value 1.3 times that of KDP [17]. Recently, 8-hydroxyquinolinedoped L-alanine components [18] were reported and proven the potentiality of LA in the mixed forms.…”