Highly Efficient Wavelength Converter Using Direct-Bonded PPZnLN Ridge Waveguide

Umeki, Takeshi; Tadanaga, O.; Asobe, Masaki

doi:10.1109/jqe.2010.2045475

Cited by 121 publications

(66 citation statements)

References 24 publications

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“…As a nonlinear material, we chose lithium triborate (LBO) because it can be noncritically phase matched and is expected to be nonhygroscopic [13]. Noncritical phase matching is beneficial because it avoids a walk-off angle between the fundamental and harmonic waves, which tends to distort the harmonic beam shape [14] and limits the interaction length. Furthermore, several publications have reported that, at the employed intensity levels, LBO did not show the above-mentioned performance degradations (e.g., [15,16]).…”

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confidence: 99%

Continuous-wave single-frequency 532 nm laser source emitting 130 W into the fundamental transversal mode

2010

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The nonlinear effect of second-harmonic generation is an efficient way to realize high-power green laser sources. But when scaling up the harmonic power, many setups reported in the literature have been limited by conversion efficiency degradation or the fundamental laser power. Here we report on the generation of 134 W of cw laser light at a wavelength of 532 nm from a fundamental power of 149 W by second-harmonic generation in an external optical resonator comprising a lithium triborate crystal. The external conversion efficiency was 90%. The harmonic light consisted of a single spectral line. At least 97% of it was emitted into the fundamental transversal mode.

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confidence: 99%

Continuous-wave single-frequency 532 nm laser source emitting 130 W into the fundamental transversal mode

2010

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“…Next, we carried out direct bonding and then we fabricated the ridge structure with a dry etching technique [7]. The PPLN section is 38 mm long, and the WDM section is 12 mm long giving a total device length of 50 mm.…”

Section: Device Fabrication Of Ppln Waveguide Circuit Withmentioning

confidence: 99%

Phase sensitive amplification using monolithically integrated PPLN waveguide circuit

Kazama

Umeki

Enbutsu

et al. 2015

2015 Opto-Electronics and Communications Conference (OECC)

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“…Direct-bonded ridge-waveguide devices have been studied to overcome these limitations described as above [3][4][5][6]. The ridge waveguide neither shows the degradation of the nonlinear coefficient nor photorefractive damage because no ion-exchange process employed in the process.…”

Section: Introductionmentioning

confidence: 99%

Mode overlap analyses of propagated waves in direct bonded PPMgLN ridge waveguide

Zhou

Feng

et al. 2011

Front. Optoelectron. China

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Direct bonded periodically poled MgO doped lithium niobate (PPMgLN) ridge waveguide is a new wavelength converter with high conversion efficiency. The optical field distribution of the ridge waveguide is simulated by employing finite-difference method (FDM), the mode overlap of propagated waves in the ridge waveguide is calculated and the relationship between the overlap coefficient and the waveguide structure sizes is also investigated. The overlap coefficient to difference frequency generation (DFG) process conversion efficiency calculation is firstly introduced.

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Highly Efficient Wavelength Converter Using Direct-Bonded PPZnLN Ridge Waveguide

Cited by 121 publications

References 24 publications

Continuous-wave single-frequency 532 nm laser source emitting 130 W into the fundamental transversal mode

Continuous-wave single-frequency 532 nm laser source emitting 130 W into the fundamental transversal mode

Phase sensitive amplification using monolithically integrated PPLN waveguide circuit

Mode overlap analyses of propagated waves in direct bonded PPMgLN ridge waveguide

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