Stable solar-pumped TEM00-mode 1064 nm laser emission by a monolithic fused silica twisted light guide

Mehellou, Said; Liang, Dawei; Almeida, Joana; Bouadjemine, R.; Vistas, Cláudia R.; Guillot, Emmanuel; Rehouma, F.

doi:10.1016/j.solener.2017.07.048

Cited by 28 publications

(21 citation statements)

References 29 publications

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“…[ 9 ] The highest laser brightness was achieved in TEM 00 operation of side‐pumped systems. [ 10,11 ] A key challenge in side‐pumping is the shorter optical pathlength through the gain medium compared to end‐pumping. Many powerful systems today, combine end‐pumping and side‐pumping of gain crystals.…”

Section: Introductionmentioning

confidence: 99%

Solar Pumping of Fiber Lasers with Solid‐State Luminescent Concentrators: Design Optimization by Ray Tracing

Dottermusch

Masuda

Endo

et al. 2021

Advanced Optical Materials

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Solar‐pumped lasers (SPLs) typically couple sunlight into the laser cavity using focusing optics and solar tracking. Luminescent solar concentrators (LSC) are an alternative, fully planar, scalable pump source that can concentrate diffuse light. For liquid LSC‐based SPLs, reflective cavities have been used to trap light and pump a Nd3+‐doped silica fiber. Here, three solid‐state LSC‐based SPL designs, in addition to the reflective cavity making use of total internal reflection, are analyzed by ray‐tracing simulations. Results are compared to a liquid LSC reference, also used for validating simulations. Substituting the liquid‐state LSC for a solid‐state LSC (with the fiber placed inside) allows a 7‐fold enhancement of the gain coefficient, corresponding to a 30‐fold enhancement of the laser output power. An additional 4‐fold increase of the output power is possible with a fiber of kilometers length. These results show a roadmap for realizing SPLs with output powers on the order of 2.8 W m−2 under terrestrial sunlight, while keeping an identical reflective cavity used for the liquid LSC design. In addition, room‐temperature operation should be possible with certain solid LSC designs, and the necessity for a reflective cavity comprised of costly dielectric mirrors may be relieved.

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Section: Introductionmentioning

confidence: 99%

Solar Pumping of Fiber Lasers with Solid‐State Luminescent Concentrators: Design Optimization by Ray Tracing

Dottermusch

Masuda

Endo

et al. 2021

Advanced Optical Materials

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show abstract

“…The Gaussian fundamental-mode profile was also found stable during the measurement. 11 In the same experimental conditions as the previous pumping-method, the end-pumped laser, 28 provided high TEM 00 -mode laser output power. Strong oscillations of 12% were observed during the measurement process of 240 s. These oscillations are due to high thermal lensing effect and consequently short thermal focal lens, which make the TEM 00 -mode laser output power very sensible to both pumping flux and temperature variation of the laser rod.…”

Section: Tem 00 -Mode Solar Laser Power Stabilitymentioning

confidence: 92%

“…Some literatures [1][2][3]6,7,9,[21][22][23][24][25][26][27][28][29] were made for the solar-laser efficiency improvement, whereas others included laser beam quality enhancements. 11,[26][27][28][30][31][32][33][34][35] Research details will be given for both multimode and monomode (fundamental-mode) solar-laser operations, respectively.…”

Section: Summary Of Research Details For Exhibitingmentioning

confidence: 99%

“…The high heat load usually leads to very low efficiency, stability, and output power for fundamental-mode (TEM 00 -mode) laser beams from solar-pumped lasers. 11 For these purposes, we report here a review of research done on solar-laser field to show the thermal loading effects on Nd:YAG solar-lasers performance in end-pumping and side-pumping configurations. We discuss the thermal loading effects on the stability, the efficiency and the beam quality of solar-laser output-power and compare some of them with the previous experimental results, which give us a better explanation of the theoretical aspects.…”

Section: Introductionmentioning

confidence: 99%

“…. Time dependent TEM 00 -mode solar-laser power variations of both end-pumped laser28 and side-pumped laser 11. Optical Engineering 120902-13 December 2018 • Vol.…”

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confidence: 99%

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Thermal loading effects on Nd:YAG solar-laser performance in end-pumping and side-pumping configurations: a review

et al. 2018

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White‐Light‐Driven Resonant Emission from a Monolayer Semiconductor

Shang

Feng

et al. 2022

Advanced Materials

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Resonant emission in photonic structures is very useful to construct all‐photonic circuits for optical interconnects and quantum computing. Optical generation of most resonant‐emitting modes in photonic structures is obtained by coherent pumping rather than incoherent illumination. Particularly, the development of white‐light‐ or even solar‐powered on‐chip light sources remains challenging but is very attractive in view of the much facile availability of these incoherent excitation sources. Here, net resonant emission from a monolayer semiconductor is demonstrated under simulated solar illumination by a white‐light‐emitting diode. The device is formed by embedding a 2D gain medium into a planar microcavity on a silicon wafer, which is compatible with the prevailing on‐chip photonic technology. Coherent and white‐light excitation sources are, respectively, selected for optical pumping, where the output light in two cases exhibits well‐consistent resonant wavelength, linewidth, polarization, location, and Gaussian‐beam profile. The fundamental TEM00 mode behaves as a doublet emission, resulting from anisotropy‐induced non‐degenerate states with orthogonal polarizations. The extraordinary spectral flipping is attributed to the competitive interplay of resonant absorption and emission. This work paves a way toward white‐light or solar‐powered state‐of‐the‐art photonic applications at the chip scale.

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Stable solar-pumped TEM00-mode 1064 nm laser emission by a monolithic fused silica twisted light guide

Cited by 28 publications

References 29 publications

Solar Pumping of Fiber Lasers with Solid‐State Luminescent Concentrators: Design Optimization by Ray Tracing

Solar Pumping of Fiber Lasers with Solid‐State Luminescent Concentrators: Design Optimization by Ray Tracing

Thermal loading effects on Nd:YAG solar-laser performance in end-pumping and side-pumping configurations: a review

White‐Light‐Driven Resonant Emission from a Monolayer Semiconductor

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