The structure and nonlinear optical properties of 3-n-propylamide-4-(4-hexyloxyphenylethynyl)-nitrobenzene

Combination of Maker fringe and total reflection technique: Nonlinear optical properties of 4-nitro-2-ethoxyamide-4′-benzyloxytolane

“…On the other hand, in this article we have the structural parameters of NEBT obtained from x-ray diffraction, 8 and can take the averaged expression for the estimated d value that is more exact. Therefore we show here that the SHEW result can make up the limited results of the Maker fringe measurement and discuss it in detail.…”

“…The synthesis of 4-nitro-2-ethoxyamide-4Ј-benzyloxytolane is described elsewhere. 8 After being purified twice by recrystallizing in 2-ethoxyethanol, the single crystal was formed by cooling the saturated 2-ethoxyethanol solution at a rate of 0.1-0.2°C/h. The acquired crystal does not absorb the fundamental ͑1064 nm͒ nor the second-harmonic light ͑532 nm͒.…”

“…2. 8 The apparatus was calibrated by comparing it with the Maker fringe measurement of d 11 ϭ0.364 pm/V 14 for a quartz crystal.…”

“…6 We have synthesized various tolane derivatives and have found a promising material 4-nitro-2-ethoxyamide-4Ј-benzyloxytolane ͑NEBT͒ through the preliminary test of their second-order nonlinear efficiencies using powder samples. 7,8 We also have succeeded in getting a fairly large single crystal and studied its structure by x-ray diffraction. 8 Using the single crystal, we have here characterized the nonlinear optical property using the Maker fringe measurement.…”

“…7,8 We also have succeeded in getting a fairly large single crystal and studied its structure by x-ray diffraction. 8 Using the single crystal, we have here characterized the nonlinear optical property using the Maker fringe measurement.…”