Journal ArticleDOI
Noncritical quasi-phase-matched second harmonic generation in an annealed proton-exchanged LiNbO/sub 3/ waveguide
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TLDR
In this paper, the phase-matching wavelength was predicted to within several nm and the conversion efficiency to within /spl ap/20% of the measured values using models for the linear and nonlinear optical properties of annealed proton-exchanged LiNbO/sub 3/ waveguides and the observed ferroelectric domain grating.Abstract:
We report the demonstration of dimensional noncritical phase matching, a phase-matched interaction length exceeding 10 mm, and an internal conversion efficiency of 204%/W for second harmonic generation of 976 nm radiation in a periodically poled, annealed proton-exchanged LiNbO/sub 3/ waveguide. Using models for the linear and nonlinear optical properties of annealed proton-exchanged LiNbO/sub 3/ waveguides and the observed ferroelectric domain grating, the phase-matching wavelength was predicted to within several nm and the conversion efficiency to within /spl ap/20% of the measured values. Optimization of waveguide second harmonic generation devices is discussed. >read more
Citations
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Journal ArticleDOI
Absolute scale of second-order nonlinear-optical coefficients
TL;DR: In this article, the second-order nonlinear-optical coefficients of several important nonlinearoptical materials have been obtained with improved accuracy, including congruent LiNbO3, 1%MgO:LiNbOn3, 5%MglO:LNb On3 at pump wavelengths of 0.532 and 0.488 µm.
Journal ArticleDOI
Tunable ultraviolet radiation by second-harmonic generation in periodically poled lithium tantalate.
J P Meyn,Martin M. Fejer +1 more
TL;DR: In this paper, electric field poling of fine-pitch ferroelectric domain gratings in lithium tantalate and characterization of nonlinear-optical properties by single-pass quasi-phase-matched second-harmonic generation (QPM SHG) were described.
Journal ArticleDOI
All-optical signal processing using /spl chi//sup (2)/ nonlinearities in guided-wave devices
TL;DR: Integrated structures that will allow for improvements of current signal-processing functions as well as the implementation of novel device concepts are presented.
Journal ArticleDOI
Electric field-induced second-order nonlinear optical effects in silicon waveguides
TL;DR: In this paper, direct-current fields across p-i-n junctions in silicon ridge waveguides were applied to perturb the permittivity of the direct-c. Kerr effect and achieve phase-only modulation and second-harmonic generation.
Journal ArticleDOI
1.5-microm-band wavelength conversion based on difference-frequency generation in LiNbO3 waveguides with integrated coupling structures.
TL;DR: In this paper, the authors reported wavelength conversion within the 1.5?µm telecommunications band based on difference-frequency generation in periodically poled lithium niobate waveguides with integrated coupling structures.
References
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Journal ArticleDOI
Quasi-phase-matched second harmonic generation: tuning and tolerances
TL;DR: The theory of quasi-phase-matched second-harmonic generation in both the space domain and the wave vector mismatch domain is presented in this paper, where various types of errors in the periodicity of these structures are analyzed to find their effects on the conversion efficiency and on the shape of the tuning curve.
Journal ArticleDOI
First‐order quasi‐phase matched LiNbO3 waveguide periodically poled by applying an external field for efficient blue second‐harmonic generation
TL;DR: In this article, a novel method of fabricating a periodic domain structure with ideal laminar domains in LiNbO3 by applying an external field at room temperature is proposed.
Journal ArticleDOI
A temperature-dependent dispersion equation for congruently grown lithium niobate
G. J. Edwards,M. Lawrence +1 more
Journal ArticleDOI
Accurate second-order susceptibility measurements of visible and infrared nonlinear crystals
M. M. Choy,Robert L. Byer +1 more
TL;DR: In this article, the second-order nonlinear susceptibilities of infrared and visible nonlinear crystals were directly compared using the wedge technique and the measured nonlinear coefficient ratios at 2.12 and 1.2, respectively.
Journal ArticleDOI
Blue light generation by frequency doubling in periodically poled lithium niobate channel waveguide
TL;DR: In this paper, the blue light at 410 nm was generated by continuous-wave frequency doubling in a periodically poled lithium niobate channel waveguide at room temperature, using the d/sub 33/nonlinear coefficient.