LD-pumped actively Q-switched Nd:KLu(WO4)2 self-Raman laser at 1185nm

Zhang, Cong; Liu, Zhaojun; Qin, Zhenquan; Zhang, Xingyu; Zhang, Huaijin; Li, Jing; Yu, Haohai; Wang, Weitao

doi:10.1016/j.optlastec.2015.04.018

Cited by 19 publications

(14 citation statements)

References 30 publications

(24 reference statements)

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“…Table 5 summarizes the research progress of the Yb:YVO 4 and Nd:LuVO 4 self-Raman lasers. [99], Nd:SrWO 4 [99,100], Yb:KLu(WO 4 ) 2 (Yb:KLuW) [101] and Nd:KLu(WO 4 ) 2 (Nd:KLuW) [102].…”

Section: Vanadatementioning

confidence: 99%

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Multifunctional Optical Crystals for All-Solid-State Raman Lasers

et al. 2021

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In the past few decades, the multifunctional optical crystals for all-solid-state Raman lasers have been widely studied by many scholars due to their compactness, convenience and excellent performance. In this review, we briefly show two kinds of multifunctional Raman crystals: self-Raman (laser and Raman effects) crystals and self-frequency-doubled Raman (frequency-doubling and Raman effects) crystals. We firstly introduce the properties of the self-Raman laser crystals, including vanadate, tungstate, molybdate and silicate doped with rare earth ions, as well as self-frequency-doubled Raman crystals, including KTiOAsO4 (KTA) and BaTeMo2O9 (BTM). Additionally, the domestic and international progress in research on multifunctional Raman crystals is summarized in the continuous wave, passively Q-switched, actively Q-switched and mode-locked regimes. Finally, we present the bottleneck in multifunctional Raman crystals and the outlook for future development. Through this review, we contribute to a general understanding of multifunctional Raman crystals.

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“…Table 5 summarizes the research progress of the Yb:YVO 4 and Nd:LuVO 4 self-Raman lasers. [99], Nd:SrWO 4 [99,100], Yb:KLu(WO 4 ) 2 (Yb:KLuW) [101] and Nd:KLu(WO 4 ) 2 (Nd:KLuW) [102].…”

Section: Vanadatementioning

confidence: 99%

“…The two strongest Raman shifts are located at 907 and 757 cm −1 [107]. In 2015, an AQS Nd:KLuW self-Raman laser at 1185 nm was produced by Cong et al [102], as shown in Figure 6, and the maximum output power of 1.5 W was attained with conversion efficiency of 9.8%. Table 8 shows the detailed research progress on tungstate self-Raman lasers.…”

Section: Vanadatementioning

confidence: 99%

Multifunctional Optical Crystals for All-Solid-State Raman Lasers

et al. 2021

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“…Furthermore, KY(WO 4 ) 2 has a high nonlinear refractive index of up to 2.4×10 -19 m 2 /W at 790 nm [9]. A high Raman gain [10] further serves to highlight the versatility of KY(WO 4 ) 2 for a wide range of optical applications, including Raman lasers [11]- [13].…”

Section: Introductionmentioning

confidence: 96%

Pedestal disk resonator in potassium yttrium double tungstate

Martinussen

Frentrop

Dijkstra

et al. 2018

Integrated Optics: Devices, Materials, and Technologies XXII

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Rare earth ion doped potassium double tungstates (e.g. KY(WO 4) 2 , KYb(WO 4) 2 , and KGd(WO 4) 2) have long been used as laser and amplifier materials thanks to the high achievable gain provided by the rare-earth ions. This family of host materials is also very attractive for nonlinear optics due to their high nonlinear refractive index and Raman gain. Very efficient on-chip solid state lasers, frequency combs, supercontinuum sources and Raman lasers could be realized if highrefractive index waveguides with the correct dispersion were developed. To date, the demonstrated integrated devices in rare-earth ion doped potassium double tungstates have shown very promising results, including high gain in on-chip amplifiers and high efficiency and output power in on-chip lasers. These devices, however, were fabricated using low refractive index contrast waveguides, which are not suitable for ring resonators or to achieve anomalous dispersion. High refractive index contrast KY(WO 4) 2 waveguides with high confinement are therefore needed as building blocks for active devices. In this work, pedestal disk resonators are proposed, based on a combination of swift ion irradiation, focused ion beam milling and a novel wet etching process. In-coupling of light into the first fabricated pedestal disks will be presented.

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“…Integrated on-chip amplifiers and lasers [1,2] find many applications in various fields, including telecommunications [3], datacom [4], biosensing [5,6] and LIDAR [7] amongst others. Potassium double tungstates (i.e., KY(WO 4 ) 2 , KGd(WO 4 ) 2 , in short KRE(WO 4 ) 2 ) -used for decades as active materials for high-power ultra-short pulsed lasers [8][9][10], thin-disk lasers [11,12] and Raman lasers [13][14][15] -have been recently demonstrated to deliver high gain per unit length in low-contrast waveguide amplifiers [16] and lasers [17][18][19], thanks to their high rare-earth ion solubility (together with a large interionic distance), high absorption and emission cross-sections when doped with rare-earth ions, and high achievable pump intensity in waveguide configuration. Even higher efficiency could be obtained by the fabrication of high-refractive index contrast waveguides in KY(WO 4 ) 2 .…”

Section: Introductionmentioning

confidence: 99%

In-depth structural analysis of swift heavy ion irradiation in KY(WO₄)₂ for the fabrication of planar optical waveguides

Frentrop¹,

Subbotin²,

Segerink³

et al. 2019

Opt. Mater. Express

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Rare-earth ion doped KY(WO 4) 2 is a well-known active laser crystal, due to its excellent gain characteristics and its relatively high nonlinear refractive index. As these properties are of great benefit to applications in integrated photonics, a study has been done into the fabrication of high refractive index contrast slab waveguides in KY(WO 4) 2 as a first step towards the fabrication of channel waveguides. When properly choosing the fluence and annealing parameters, ion irradiation with 12 MeV carbon ions produces a step-like damage profile. Confocal Raman microscopy, X-ray diffraction and transmission electron microscopy are used in this work to study the structural damage induced by ion irradiation. The characterization indicates damage to the crystal structure due to the ion irradiation that increases as a function of both depth and ion fluence till the threshold for amorphization is achieved. Successive annealing steps of the irradiated crystals at different temperatures show partial repair of the crystalline structure when the irradiation did not fully amorphize the material. When the threshold of amorphization was reached, annealing further increases the damage induced by the irradiation. By tuning the irradiation fluence, a high-refractive index contrast slab waveguide in KY(WO 4) 2 produced by ion irradiation was demonstrated.

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LD-pumped actively Q-switched Nd:KLu(WO4)2 self-Raman laser at 1185nm

Cited by 19 publications

References 30 publications

Multifunctional Optical Crystals for All-Solid-State Raman Lasers

Multifunctional Optical Crystals for All-Solid-State Raman Lasers

Pedestal disk resonator in potassium yttrium double tungstate

In-depth structural analysis of swift heavy ion irradiation in KY(WO₄)₂ for the fabrication of planar optical waveguides

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LD-pumped actively Q-switched Nd:KLu(WO4)2 self-Raman laser at 1185nm

Cited by 19 publications

References 30 publications

Multifunctional Optical Crystals for All-Solid-State Raman Lasers

Multifunctional Optical Crystals for All-Solid-State Raman Lasers

Pedestal disk resonator in potassium yttrium double tungstate

In-depth structural analysis of swift heavy ion irradiation in KY(WO4)2 for the fabrication of planar optical waveguides

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Product

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In-depth structural analysis of swift heavy ion irradiation in KY(WO₄)₂ for the fabrication of planar optical waveguides