Sum frequency generation of UV laser radiation at 266  nm in LBO crystal

Nikitin, D. G.; Byalkovskiy, O. A.; Vershinin, O.; Puyu, P. V.; Tyrtyshnyy, V. A.

doi:10.1364/ol.41.001660

Cited by 33 publications

(15 citation statements)

References 5 publications

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“…LBO is also an excellent nonlinear crystal which is always applied to the SHG from the NIR to the green. The DUV laser is usually realized by two stages of SFG in the LBO crystals since there is no phase-matching angle for LBO to convert the green laser at 515 nm or 532 nm to the DUV directly by SHG [16]. Recently, the NSBBF crystal has also shown its potential to obtain a high conversion efficiency from 532 nm to 266 nm.…”

Section: Duv Laser Generated By Fhg Of the 1-µm Nir Lasermentioning

confidence: 99%

“…In the past decades, with the fast development of the solid-state lasers and the nonlinear optical crystals, high-power DUV lasers at 266 nm/258 nm have been studied by many research groups fruitfully [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. These DUV lasers are usually generated by fourth-harmonics generation (FHG) of the near-infrared (NIR) laser at 1 µm as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

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High-Power, Solid-State, Deep Ultraviolet Laser Generation

Xuan

Igarashi²,

Ito

et al. 2018

Applied Sciences

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At present, deep ultraviolet (DUV) lasers at the wavelength of fourth harmonics of 1 µm (266 nm/258 nm) and at the wavelength of 193 nm are widely utilized in science and industry. We review the generation of these DUV lasers by nonlinear frequency conversion processes using solid-state/fiber lasers as the fundamental frequency. A DUV laser at 258 nm by fourth harmonics generation (FHG) could achieve an average power of 10 W with a beam quality of M 2 < 1.5. Moreover, 1 W of average power at 193 nm was obtained by sum-frequency generation (SFG). A new concept of 193-nm DUV laser generation by use of the diamond Raman laser is also introduced. A proof-of-principle experiment of the diamond Raman laser is reported with the conversion efficiency of 23% from the pump to the second Stokes wavelength, which implies the potential to generate a higher power 193 nm DUV laser in the future.Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would lead to a better laser machining result compared to the previous DUV lasers with larger M 2 .

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Section: Duv Laser Generated By Fhg Of the 1-µm Nir Lasermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Power, Solid-State, Deep Ultraviolet Laser Generation

Xuan

Igarashi²,

Ito

et al. 2018

Applied Sciences

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“…[3][4][5][6] In recent years, the demand for ultraviolet (UV, 𝜆 < 400 nm) coherent light sources, especially deep-ultraviolet (DUV, 𝜆 < 200 nm) lasers, in various frontier fields, is increasing sharply. [7][8][9][10] Therefore, after the unremitting efforts of generations of researchers, a large number of UV NLO crystals, such as 𝛽-BaB 2 O 4 , [11] LiB 3 O 5 , [12,13] KBe 2 BO 3 F 2 (KBBF), [14][15][16] and Sr 2 Be 2 B 2 O 7 , [17] DOI: 10.1002/adom.202300987 have been found. [18][19][20] However, up to now, only KBBF crystal really achieves the output of 177.3 nm laser by the direct frequency doubling process.…”

Section: Introductionmentioning

confidence: 99%

The Strategy to Improve the Phase Matching Ability in Tetrahedron‐Based Deep‐Ultraviolet Nonlinear Optical Crystals

Sha

Shang

Wang

et al. 2023

Advanced Optical Materials

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Nonlinear optical (NLO) crystals that can generate deep‐ultraviolet (DUV) lasers by the frequency conversion processes play an important role in many basic and frontier research fields. Tetrahedron‐based NLO crystals, which are decent DUV NLO candidates, always exhibit a large DUV transparency window. However, their insufficient birefringence often makes it difficult to satisfy the phase matching condition in the DUV or even UV region. Therefore, some strategies are put forward to improve the phase matching ability of tetrahedron‐based DUV NLO crystals. In this review, the relevant reports are summarized into four categories, including the heterozygosity of tetrahedral groups, the introduction of the planar groups, the combination of the heteroleptic tetrahedrons and the planar groups, and the recombination of polar structures with ferroelectricity. Furthermore, the development tendency of tetrahedron‐based DUV NLO crystals is also discussed. Therefore, this review will be helpful to the exploration of new DUV NLO crystals.

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“…[3,4] So far, using narrow-linewidth solid-state lasers as fundamental frequency sources for frequency conversion, has been the most popular method to produce UV lasers. [5][6][7][8][9][10][11][12][13][14] In addition, narrow-linewidth fiber lasers are also potential fundamental frequency sources, which can provide better-quality beams, improved compactness, higher stability and efficiency. [15] Furthermore, narrow-linewidth fiber lasers are easy to achieve tunable repetition frequency and pulse width, compared with solid-state lasers.…”

Section: Introductionmentioning

confidence: 99%

The 266-nm ultraviolet-beam generation of all-fiberized super-large-mode-area narrow-linewidth nanosecond amplifier with tunable pulse width and repetition rate

Yang

et al. 2022

Chinese Phys. B

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We report on a compact, stable, all-fiberized narrow-linewidth (0.045 nm) pulsed laser source emitting laser beam with a wavelength of 266 nm, and tunable pulse width and repetition rate. The system is based on all-fiberized nanosecond amplifier architecture, which consists of Yb-doped fiber preamplifiers and a super-large-mode-area Yb-doped fiber power amplifier. The fiber amplifier with a core of 50 μm is used to raise the threshold of the stimulated Brillouin scattering (SBS) effect and to obtain high output power and single pulse energy. Using lithium triborate (LBO) crystal and beta-barium borate (BBO) crystal for realizing the second-harmonic generation (SHG) and fourth-harmonic generation (FHG), we achieve 17 μJ (1.73 W) and 0.66 μJ (66 mW), respectively, at wavelengths of 532 nm and 266 nm and a repetition rate of 100 kHz with pulse width of 4 ns. This source has great potential applications in fluorescence research and solar-blind ultraviolet optical communication.

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Sum frequency generation of UV laser radiation at 266 nm in LBO crystal

Cited by 33 publications

References 5 publications

High-Power, Solid-State, Deep Ultraviolet Laser Generation

High-Power, Solid-State, Deep Ultraviolet Laser Generation

The Strategy to Improve the Phase Matching Ability in Tetrahedron‐Based Deep‐Ultraviolet Nonlinear Optical Crystals

The 266-nm ultraviolet-beam generation of all-fiberized super-large-mode-area narrow-linewidth nanosecond amplifier with tunable pulse width and repetition rate

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