Formation of Ion Exchanged Cu:LiTaO3 Waveguides and Their Investigations

Abstract

V. A. GANSHIN, V. SH. IVANOV3), Y U . N. KORKISHKO, and T. V. MOROZOVA The possibility is found of Cu: LiTaO, waveguides forming by ion exchange technique in salt melts at temperatures below the Curie point of lithium tantalate. By the complex studies of doped layers some regularities are established and specific features of two probable types of exchange processes in X-, Y-, and Z-cut plates of crystals: Cut F? Li+ and Cuzt s 2 Li'. nOKa3aHa B03MOXHOCTb I$OpMApOBaHHfl CU : LiTaO, CBeTOBOAOB MeTOAOM AOHHOrO 06MeHa B JIerApOBaHHbIX CnOeB A YCTaHOBneHbI HeKOTOpbIe 3aKOHOMepHOCTII €4 OCO6eHHOCTA IIpOTeKaHMfl ABYX BepORTHbIX npOUeCCOB 06MeHa B x-, Y-, Z-Cpe3aX KpACTaJlJIOB: CU' @ Li+ A c U 2 + pacnnasax coneii npa TeMnepaTypax HAxe TOYKR Kmpa. npoBeneHb1 KoMnneKCHbIe AccneAoBaHafl 2 Li'. Methods of ResearchWaveguiding Cu: LiTaO, layers were obtained by processing X-, Y-, and Z-cut lithium tantalate plates in melts of inorganic salts of two systems: (I) a system with eutectic composition CuCl + KCI (65 mol% of CuCl) at temperatures T = 300 to 350 "C for 1 to 4 h, and (11) a salt mixture CuSO, + K, Na, Zn I/ SO, (1.4 mol% of CuSO,) at T = 390 ') SU-103498 Moscow, USSR. ' ) SU-103498 Moscow, NIIFP. 3, Leningrad, NPO "Burevestnik".

Copper–lithium ion exchange in LiNbO3

“…3,11,12 The presence of Cu + ions can be a consequence of Cu 2+ reduction or can be due to the presence of an electron associated with a Cu 2+ center or trapped on it. The reconstruction of the refractive index profile shows that the processing temperature does not play an appreciable role in the determination of the effective refractive indices.…”

“…[3][4][5][6]8 In particular, the combined proton and copper exchange has recently attracted much attention for the creation of a solid-state laser in LiNbO 3 , working in the yellow-green range. [3][4][5][6]8 In particular, the combined proton and copper exchange has recently attracted much attention for the creation of a solid-state laser in LiNbO 3 , working in the yellow-green range.…”

Holographic Recording in Planar Cu:H:LiTaO3 Waveguides

“…2. The intensity of this band decreases during annealing, and simultaneously the band at 4.2 eV that exists already in the undoped substrate [8] increases. Additionally, the analysis of the difference spectrum between non-annealed and annealed Cu(II)-exchanged waveguides shows the appearance of a weak band (optical density 0.01 to 0.02) at 3.3 eV that is created by annealing.…”

Electronic paramagnetic resonance study of Cu2+ ions in copper ion-exchanged layers of lithium niobate crystals

“…[1][2][3][4][5] In particular, the combined proton and copper exchange has recently attracted much attention for the creation of a solid state laser in LiNbO 3 , working in the yellow-green range. [1][2][3][4][5] In particular, the combined proton and copper exchange has recently attracted much attention for the creation of a solid state laser in LiNbO 3 , working in the yellow-green range.…”