TY - JOUR
T1 - Giant Non-Resonant Infrared Second Order Nonlinearity in γ -NaAsSe2
AU - He, Jingyang
AU - Iyer, Abishek K.
AU - Waters, Michael J.
AU - Sarkar, Sumanta
AU - Zu, Rui
AU - Rondinelli, James M.
AU - Kanatzidis, Mercouri G.
AU - Gopalan, Venkatraman
N1 - Funding Information:
J.H. and A.K.I. contributed equally to this work. J.H., A.K.I., S.S., M.G.K., and V.G. acknowledge the Air Force Office of Scientific Research Grant number FA9550‐18‐S‐0003. M.J.W. and J.M.R. were supported by the National Science Foundation's (NSF) MRSEC program (DMR‐1720139) at the Materials Research Center of Northwestern University. R.Z. and V.G. were supported by the NSF Materials Research Science and Engineering Center for Nanoscale Science, DMR‐2011839. Scientific discussions and advice from Gary Cook, Carl M. Liebig, Ryan K. Feaver, Sean A. McDaniel, and Rita D. Peterson from the AFRL are gratefully acknowledged.
Funding Information:
J.H. and A.K.I. contributed equally to this work. J.H., A.K.I., S.S., M.G.K., and V.G. acknowledge the Air Force Office of Scientific Research Grant number FA9550-18-S-0003. M.J.W. and J.M.R. were supported by the National Science Foundation's (NSF) MRSEC program (DMR-1720139) at the Materials Research Center of Northwestern University. R.Z. and V.G. were supported by the NSF Materials Research Science and Engineering Center for Nanoscale Science, DMR-2011839. Scientific discussions and advice from Gary Cook, Carl M. Liebig, Ryan K. Feaver, Sean A. McDaniel, and Rita D. Peterson from the AFRL are gratefully acknowledged.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2022/1/18
Y1 - 2022/1/18
N2 - Infrared laser systems are vital for applications in spectroscopy, communications, and biomedical devices, where infrared nonlinear optical (NLO) crystals are required for broadband frequency down-conversion. Such crystals need to have high non-resonant NLO coefficients, a large bandgap, low absorption coefficient, and phase-matchability among other competing demands; for example, a larger bandgap leads to smaller NLO coefficients. Here, the successful growth of single crystals of γ -NaAsSe2 that exhibit a giant second harmonic generation (SHG) susceptibility of d11 = 590 pm V−1 at 2 µm wavelength is reported; this is ~18 times larger than that of commercial AgGaSe2 while retaining a similar bandgap of ~1.87 eV, making it an outstanding candidate for quasi-phase-matched devices utilizing d11. In addition, γ -NaAsSe2 is both Type I and Type II phase-matchable, and has a transparency range up to 16 µm wavelength. Thus, γ -NaAsSe2 is a promising bulk NLO crystal for infrared laser applications.
AB - Infrared laser systems are vital for applications in spectroscopy, communications, and biomedical devices, where infrared nonlinear optical (NLO) crystals are required for broadband frequency down-conversion. Such crystals need to have high non-resonant NLO coefficients, a large bandgap, low absorption coefficient, and phase-matchability among other competing demands; for example, a larger bandgap leads to smaller NLO coefficients. Here, the successful growth of single crystals of γ -NaAsSe2 that exhibit a giant second harmonic generation (SHG) susceptibility of d11 = 590 pm V−1 at 2 µm wavelength is reported; this is ~18 times larger than that of commercial AgGaSe2 while retaining a similar bandgap of ~1.87 eV, making it an outstanding candidate for quasi-phase-matched devices utilizing d11. In addition, γ -NaAsSe2 is both Type I and Type II phase-matchable, and has a transparency range up to 16 µm wavelength. Thus, γ -NaAsSe2 is a promising bulk NLO crystal for infrared laser applications.
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U2 - 10.1002/adom.202101729
DO - 10.1002/adom.202101729
M3 - Article
AN - SCOPUS:85118657404
SN - 2195-1071
VL - 10
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 2
M1 - 2101729
ER -