TWIN-CRYSTAL WALK-OFF-COMPENSATED TYPE-II 2ND-HARMONIC GENERATION - SINGLE-PASS AND CAVITY-ENHANCED EXPERIMENTS IN KTIOPO4

被引：56

作者：

ZONDY, JJ

ABED, M

KHODJA, S

机构：

[1] Laboratoire Primaire du Temps et des Frequences, Bureau National de Metrologie, Observatoire de Paris, Paris, 75014, 61, avenue de l’Observatoire

[2] D6partement d’Electronique Quantiqueet Moléculaire, Centre National d’Etudes des Télécommunication, Bagneux, 92220

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1994年 / 11卷 / 12期

关键词：

D O I：

10.1364/JOSAB.11.002368

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A twin-crystal device consisting of a pair of two identically cut KTP crystals of length l = 6 mm mounted with their optical axes symmetrically crossed is used to circumvent conversion-efficiency limitations that are due to the aperture effect in type-II (oeo) critically phase-matched second-harmonic generation (SHG) at lambda = 1.3 and lambda = 2.532 mu m. A single-pass increase of as great as 3.2-3.5 times the conversion efficiency of a single crystal is obtained with this angle-tuned device at these wavelengths. This enhancement results from an increased effective coherence length of the interaction compared with that of a single bulk crystal of length 2l. We show that cavity-enhanced critically phase-matched type-II SHG can be easily performed with the twin device, allowing for walk-off as well as phase compensation for the fundamental-resonating ordinary and extraordinary waves at lambda = 1.30 mu m. Potential implementations of this device in other single-cavity-enhanced parametric interactions, such as doubly resonant optical parametric oscillation and degenerate sum- or difference-frequency mixing, are discussed.

引用

页码：2368 / 2379

页数：12

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