Special Issue on Solid State Lasers Materials, Technologies and Applications

Pirzio, Federico

doi:10.3390/app8030460

Cited by 2 publications

(4 citation statements)

References 15 publications

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“…The parameters that we used for the thermo-optical measurements are shown in the tab. (2). The heat source profile was chosen to be a continuous Gaussian beam (as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…A schematic configuration of the end pumping process for solid-state lasers is shown in Fig. (2). The main directions of thermal discharge associated with the thermo-optic and the geometry of the cooling system are shown.…”

Section: Heat Generation and Distributionmentioning

confidence: 99%

“…Solid-state lasers are among the technologies with enormous potential in various industries, including advanced manufacturing. [1][2][3] The technology has a lower overall cost than traditional gas or semiconductor lasers, while also offering the benefits of an extended lifespan, minimal maintenance, and an eco-friendly product. The only downside to this process is the price tag; however, many scientists are working to reduce costs by innovating and developing new materials that will lower manufacturing costs and further upgrade the longevity of solidstate lasers.…”

Section: Introductionmentioning

confidence: 99%

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Active control of focus position of laser beams using thermally induced lensing

Bell

Mabena

Naidoo

2023

Laser Resonators, Microresonators, and Beam Control XXV

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In this paper, we present a method for active control of thermally induced lensing in high-power lasers. We used thermal lensing to study the advantages of high-power lasers. Many delivery optics are sensitive to the thermally induced lens, which can change the focus position of the transmitted beam. To compensate for this, we used thermal lensing by pumping a crystal that had no absorption or amplification at the seed beam wavelength. By controlling the strength of the heat source, we demonstrate acute control of the focus position. Our modelling work is based on the finite-volume method (FVM) to analyse thermal effects in end-pumped solid-state crystals. This work has the potential to pave the way for active control of a thermally induced lens in high-powered laser-based applications.

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“…The parameters that we used for the thermo-optical measurements are shown in the tab. (2). The heat source profile was chosen to be a continuous Gaussian beam (as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

Section: Heat Generation and Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Active control of focus position of laser beams using thermally induced lensing

Bell

Mabena

Naidoo

2023

Laser Resonators, Microresonators, and Beam Control XXV

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show abstract

“…Laser processing of materials is a well-established technology and has been used for more than four decades, playing an important role in the modern manufacturing industry and economy [4]. The technologies based on the laser processing methods, such as hardening [5], machining (cutting and drilling) [6], welding [7], marking [8], laser cladding [9] and laser alloying [10], have achieved significant success and are used in industry for the manufacture of machine parts and mechanisms made of materials of various physical nature.…”

Section: Introductionmentioning

confidence: 99%

Laser Drilling in Alumina Ceramics Using a Combination of Laser Pulses in the Free-Running and Q-Switched Modes

et al. 2023

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The possibility of using a two-pulse laser action consisting of a pulse of the free-running pulse followed by the Q-switched pulse in the processes of laser drilling in alumina ceramics is considered. A diagram of a laser machine for implementing the proposed processing method and the method for determining the energy required to form the through hole and the drilling time are presented. For thermal exposure, pulsed radiation of Nd:YAG of the laser operating in the free-running mode (pulse duration 0.5 ms, energy up to 0.3 J) was used. The Q-switched pulse was generated using a second Nd:YAG laser (pulse duration 25–30 ns, energy up to 0.03 J). The laser radiation was focused on the surface of the material at one point. The time between the start of generation of the first and second lasers varied in the range of 0–1000 μs. The optimal delay time for the start of the generation of the second laser relative to the first was determined experimentally. The obtained results showed that the combination of the free-running pulse and the Q-switched pulse can significantly increase the efficiency of laser machining of ceramics and improve the hole quality. This scheme turned out to be promising for optimizing parameters of the process of laser drilling in thin-sheet alumina ceramics. The obtained results obtained have great potential in the field of precision laser machining of ceramics.

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Special Issue on Solid State Lasers Materials, Technologies and Applications

Abstract: Even though more than half a century has already passed since the first demonstration of laser action in ruby crystal, solid-state lasers are still a hot research topic.[...]

Cited by 2 publications

References 15 publications

Active control of focus position of laser beams using thermally induced lensing

Active control of focus position of laser beams using thermally induced lensing

Laser Drilling in Alumina Ceramics Using a Combination of Laser Pulses in the Free-Running and Q-Switched Modes

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