Nonlinear optics crystals (review and summary of data)

The fundamental absorption edge in single-crystal proustite Ag3AsS3

“…where tis the sample thickness and R the surface reflectivity. In the present study, R was calculated from the refractive index data [12] using the relation [13] R = ( nl)'/(n + 1)*.…”

Effect of thermal annealing on the optical properties of CdGeAs2 wafers

“…[24], where d is the thickness of the samples, T is the transmission, and RE(n À 1) 2 /(nþ 1) 2 is the Fresnel power reflection coefficient. Refractive index for the various pump wave lengths were derived from Nikogosyan [2]. The transmittance of wafer C annealed for 150 h is up to 48.65% at 5.5 mm.…”

“…It is characterized by one of the highest non-linear optical coefficient (d 36 ¼236 pm/V) of any known compound, wide transparency range of 2.3-18 mm, sufficient birefringence (n e À n o E0.09) and relatively high thermal conductivity (about 42-93 mW/cm K) for high average power applications [1][2][3][4]. So this material is very attractive in second harmonic generation (SHG) [5] and optical parametric oscillator (OPO) device fabricating and has bright future in mid-and far-infrared regions applications [6].…”

Design considerations of an infrared spectrometer based on difference–frequency generation in AgGaSe_2

“…The ternary chalcopyrite AgGaSe 2 shows a wide transparency range from 0.71 to 18 jLm. 7 These crystals have recently become available commercially in large linear dimensions (> 40 mm) and with high optical quality. 8 The absorption coefficient of this material in its transmission range is comparable with that of AgGaS 2 .…”