LINEAR AND NONLINEAR OPTICAL PROPERTIES OF 2,7-DINITRO-9-FLUORENONE SINGLE CRYSTAL

• Published in: Molecular crystals and liquid crystals (Philadelphia, Pa. : 2003) Vol. 406; no. 1; pp. 59 - 67
• Main Authors: Nakao, Satoru, Shiozaki, Hisayoshi, Sakurai, Yoshiaki, Hioki, Ayako, Kimoto, Masaki, Araoka, Fumito, Takezoe, Hideo
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.01.2003; Taylor & Francis
• Subjects: 2,7-dinitro-9-fluorenone; Birefringence; Birefringence (including stress birefringence, flow birefringence, etc.); Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Frequency conversion ; harmonic generation, including high-order harmonic generation; Fundamental areas of phenomenology (including applications); Harmonic generation, frequency conversion; Nonlinear optics; optical properties; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Optics; phase matching; Physics; second harmonic generation; Second harmonic generation; Phase-matching; Refractive index; phase matching; XRD; Experimental study; Lattice parameters; Monocrystals; optical properties; Orthorhombic lattices; 2,7-dinitro-9-fluorenone; Birefringence; Conjugated compound; Fluorene derivatives; Organic compounds
• ISSN: 1542-1406; 1563-5287
• DOI: 10.1080/744818987

The linear and nonlinear optical properties of 2,7-dinitro-9-fluorenone single crystals are investigated, especially those affecting the usage for optical second-harmonic generation. Sufficient optical quality plate-like crystals have been grown by sublimation in purified nitrogen flow. The crystal is transparent in the visible and near-infrared region, is negative biaxial with n a >n c >n b and has birefringence with n a −n b =0.52 at 532 nm. The nonlinear optical coefficients determined by Maker fringe method are d 33 =8 pm/V and d 32 =d 24 =0.4 pm/V. Type I and type II critical phase matching are possible in the near infrared region and type I is preferable.