Periodically poled materials for miniature light sources

Laurell, Fredrik

doi:10.1016/s0925-3467(98)00046-9

Cited by 34 publications

(11 citation statements)

References 52 publications

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“…When grown in the near-stoichiometric form (nSLN, Li/Nb ~ 1) the optical properties improve significantly (Table 1) as a result of the decrease in the defect concentration [30,[46][47][48][49][50][51][52]. So nSLN is a better choice for nonlinear frequency conversion, as well as photo-refractive and holographic data storage applications [53,54] in comparison to CLN.…”

Section: Effect Of Intrinsic Defect On Propertiesmentioning

confidence: 99%

“…Even a coercive field as low as 200 V/mm has been reported for nSLN crystal grown from K2O flux [49]. SLN crystals, therefore, offer favorable properties for the realization of periodically poled devices (PPLN) [54] and domain engineering [52,53] where an electric field has to be applied for poling the material. …”

Section: Effect Of Intrinsic Defect On Propertiesmentioning

confidence: 99%

“…Further the intrinsic defects influence the dielectric and ferroelectric properties of CLN [24,25,54,55]. The Nb Li 5+ antisite defects in CLN act as pinning centers that inhibit the movement of the ferroelectric domain wall in the crystal [9].…”

Section: Effect Of Intrinsic Defect On Propertiesmentioning

confidence: 99%

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Control of Intrinsic Defects in Lithium Niobate Single Crystal for Optoelectronic Applications

et al. 2017

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A single crystal of lithium niobate is an important optoelectronic material. It can be grown from direct melt only in a lithium deficient non-stoichiometric form as its stoichiometric composition exhibits incongruent melting. As a result it contains a number of intrinsic point defects such as Li-vacancies, Nb antisites, oxygen vacancies, as well as different types of polarons and bipolarons. All these defects adversely influence its optical and ferroelectric properties and pose a deterrent to the effective use of this material. Hence, controlling the defects in lithium niobate has been an exciting topic of research and development over the years. In this article we discuss the different methods of controlling the intrinsic defects in lithium niobate and a comparison of the effect of these methods on the crystalline quality, stoichiometry, optical absorption in the UV-vis region, electronic band-gap, and refractive index.

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Section: Effect Of Intrinsic Defect On Propertiesmentioning

confidence: 99%

Section: Effect Of Intrinsic Defect On Propertiesmentioning

confidence: 99%

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Control of Intrinsic Defects in Lithium Niobate Single Crystal for Optoelectronic Applications

et al. 2017

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“…An overview can be found in the textbook from Risk et al [64] and a comprehensive review about the QPM materials for miniaturized devices can be found in [65], where the influence of the degradation of the waveguide performance over time is discussed in more depth.…”

Section: Limitations and Damage Mechanismsmentioning

confidence: 99%

Blue‐green light generation using high brilliance edge emitting diode lasers

Jechow¹,

Menzel

Paschke

et al. 2010

Laser & Photonics Reviews

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A review about second harmonic generation using edge emitting diode lasers and nonlinear crystals to obtain laser radiation in the blue-green spectral range is presented. Therefore, pump laser radiation with high brightness and narrow bandwidth is necessary. Thus, this review gives an overview of the advances made with distributed feedback and Bragg reflector lasers, tapered lasers and amplifiers as well as external cavity diode lasers and master oscillator power amplifier schemes to achieve high brilliance emission. Since periodically poled materials have enabled high second harmonic conversion efficiencies with low and moderate pump powers, the review is focused on frequency doubling using those materials. The most commonly used materials, their properties and limitations are discussed briefly. Single pass and resonant SHG setups with waveguide and bulk nonlinear crystals are discussed and an emphasis on building compact and integrated devices is made. PPLN waveguide crystal pumped by a DFB laser (above). Integrated SHG device on a CCP heatsink (below).

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“…This is a five-fold increase over the effective nonlinear gain coefficient of bulk lithium niobate using birefringence phase matching. Furthermore, the acceptance bandwidth for QPM structures is typically larger than those for conventionally phasematched devices since QPM allows the use of the same polarization for the input and generated frequencies [6]. Solid-state nonlinear materials such as PPLN are well-suited to efficiently generating SRS radiation as the nonlinear gain coefficient is higher than in fluid media due to an increase in the concentration of Raman scattering centres [7].…”

Section: Introductionmentioning

confidence: 99%