Achievement of ultrahigh solar concentration with potential for efficient laser pumping

Gleckman, Philip

doi:10.1364/ao.27.004385

Cited by 32 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Efficient laser emission, 1.5-2 times better than for Nd:YAG, was demonstrated for Cr-sensitized Nd:GSGG under a broad-band visible flash-lamp [6,[12][13][14][15][16] or solar [17,18] pumping. Unfortunately, the thermal and thermo-optic parameters of GSGG are lower than for YAG but still considerably better than for the Nd-doped glasses [3,19,20].…”

Section: Introductionmentioning

confidence: 99%

Improved laser efficiency by direct diode laser pumping of the radiation-resistant Nd:gadolinium–scandium–gallium garnet

Lupeǐ¹,

Pavel²,

Lupeǐ³

2014

Laser Phys.

View full text Add to dashboard Cite

Spectroscopic investigation of the radiation-resistant Nd:GSGG crystals and ceramics reported in this paper evidences that the absorption line at 883 nm corresponding to the unusual situation of quasi-degenerate absorption transitions 4 I 9/2 (2) → 4 F 3/2 (1) and 4 I 9/2 (3) → 4 F 3/2 (2) can be used for efficient direct diode laser pumping of this material, with stable absorption over an extended temperature range. It is inferred that the reduction of the quantum defect at this wavelength of pump compared to the traditional 807 nm pumping could improve the laser parameters and reduce drastically the heat generation, leading to a considerable extension of the power scalability. This possibility is demonstrated for the first time in the case of the 1061 nm laser emission in a continuous-wave and in the repetitive active acousto-optic and passive Q-switched laser emission. In all regimes this manifests in the reduction of the laser threshold, increase of slope efficiency and extension of the average power range. Additionally, in the active Q-switching this enables increased pulse energy and reduced pulse duration. The direct pumping could revitalize the utilization of Nd:GSGG for construction of lasers with storage of population inversion or working in an ionizing radiation environment.

show abstract

Section: Introductionmentioning

confidence: 99%

Improved laser efficiency by direct diode laser pumping of the radiation-resistant Nd:gadolinium–scandium–gallium garnet

Lupeǐ¹,

Pavel²,

Lupeǐ³

2014

Laser Phys.

View full text Add to dashboard Cite

show abstract

“…Actually, incoherent light of sufficient intensity will suffice. With optical concentration and spectral 82,83,84 filtering, solar lasers have been realized decades back and similar techniques can be used for upconversion cooling using photons from the sun. One can envisage the availability of solar-assisted active cooling films like those passive cooling films discussed in section 2.3 in the future.…”

Section: Solar-assisted Heat Pump Systemsmentioning

confidence: 99%

Novel Methods to Harness Solar Radiation for Advanced Energy Applications

Yin¹,

Wang²,

Ding³

et al. 2019

ES Energy Environ.

View full text Add to dashboard Cite

With the demand for renewable energy, solar energy is widely used to generate and convert into heat. It is important to look beyond solar thermal for revolutionary technology to increase the coefficient of utilization of solar energy. In this editorial, a review on the promising novel technologies and applications for solar energy utilization is presented. In particular, we examine novel technologies for solar radiation controlling and harnessing solar energy for energy-efficient space heating and cooling through spectral selectivity and heat pump systems. These novel technologies in solar energy systems can provide significant benefits and can be developed for a wide range of applications.

show abstract

“…4,5 Their main applications are in the field of heating, 6 photovoltaic cells 7 and sun-pumped lasers. [8][9][10] The use of optical fibres for transferring solar power to a utilization system was proposed some years ago; 11 recently this technique has been suggested for surgical use 12 and to transfer the power of a wide sun image by a fibre bundle. 13 To maximize the collected power, the optical system, which concentrates the solar light at the top of the optical fibre, must be optically designed for matching the diameter and angular aperture of the fibre.…”

Section: Introductionmentioning

confidence: 99%

Optical design and development of fibre coupled compact solar collectors

Sansoni¹,

Fontani²,

Francini³

et al. 2007

Lighting Research & Technology

View full text Add to dashboard Cite

The paper describes the design and realization of optical systems for concentrating solar light onto an optical fibre. Three different classes of optical system, with increasing surface complexity, were studied. These were collectors with spherical surfaces only, parabolic concentrators and collectors containing aspherical surfaces. This research led to two designs of solar collecting systems for application to the illumination of internal spaces. The first is an original catadioptric configuration made of a single block of quartz coupled to small silica fibres. The second consists of a polymethyl methacrylate aspherical lens and a larger fibre bundle made of plastic.

show abstract

Achievement of ultrahigh solar concentration with potential for efficient laser pumping

Cited by 32 publications

References 4 publications

Improved laser efficiency by direct diode laser pumping of the radiation-resistant Nd:gadolinium–scandium–gallium garnet

Improved laser efficiency by direct diode laser pumping of the radiation-resistant Nd:gadolinium–scandium–gallium garnet

Novel Methods to Harness Solar Radiation for Advanced Energy Applications

Optical design and development of fibre coupled compact solar collectors

Contact Info

Product

Resources

About