Nanosecond Self-Q-Switching Nd:Luag Laser With High Repetition Rate

Zhang, Guangju; Liu, Qiang; Li, Peilin; Fu, Xing

doi:10.1109/jphot.2021.3071114

“…Note that the self-Q-switching operation based on the Kerr-lens effect was reported most recently in laser-diode-pumped Nd:LuAG lasers, where SQS was further verified to occur in a numerical simulation of the laser rate equations, including a similar photon-density-dependent intracavity loss to what we discussed above, considering soft aperture loss and self-focusing caused by the Kerr lens [32,33].…”

Section: Mode Matching Between Pump and Lasing Beamssupporting

confidence: 68%

Spiking ruby revisited: self-induced periodic spiking oscillations leading to chaotic state in a Cr:Al2O3 laser with cw 532-nm pumping

Otsuka¹,

Sudo²

2023

Preprint

0

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This paper reexamines a 60-year-old mystery of spiking behavior in ruby lasers with a cw 532-nm pump, paying special attention to mode matching between the pump and lasing beam within a ruby crystal placed in a semi-confocal laser cavity. Periodic spiking oscillations were observed in a limited pump power regime, where spikes obeying the generic asymmetric hyperbolic function appeared at a repetition rate around 50 kHz and with a 130-150ns width and 0.1-0.6μJ energy depending on the pump power. The physics of the spiking behavior based on Kleinman’s mechanical approach and a plausible interpretation for the periodic spiking oscillation in terms of self-induced mode matching between the pump and laser beams through the self-induced Kerr-lens effect are addressed. The statistical nature inherent to spiking and the associated self-organized critical behavior in quasi-periodic spiking oscillations as well as chaotic states occurring outside the periodic spiking regime are also explored from a nonlinear dynamics point of view.

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“…Recently, SQS resulting from the intensity-dependent intracavity loss was reported in a Nd:LuAG laser through selffocusing and soft aperture loss in the gain medium itself [27]. Finally, let us examine the nonlinear dynamics observed outside the periodic spiking regime.…”

Section: 𝑐𝑟𝑦𝑠𝑡𝑎𝑙mentioning

confidence: 99%

Spiking ruby revisited: self-induced periodic spiking oscillations leading to chaotic state in a Cr:Al2O3 laser with cw 532-nm pumping

Otsuka¹,

Sudo²

2023

Preprint

0

View full text Add to dashboard Cite

This paper reexamines a 60-year-old mystery of spiking behavior in ruby lasers with a cw 532-nm pump, paying special attention to mode matching between the pump and lasing beam within a ruby crystal placed in a semi-confocal laser cavity. Periodic spiking oscillations were observed in a limited pump power regime, where spikes obeying the generic asymmetric hyperbolic function appeared at a repetition rate around 50 kHz and with a 130-150ns width and 0.1-0.6μJ energy depending on the pump power. The physics of the spiking behavior based on Kleinman’s mechanical approach and a plausible interpretation for the periodic spiking oscillation in terms of self-induced mode matching between the pump and laser beams through the self-induced Kerr-lens effect are addressed. The statistical nature inherent to spiking and the associated self-organized critical behavior in quasi-periodic spiking oscillations as well as chaotic states occurring outside the periodic spiking regime are also explored from a nonlinear dynamics point of view.

show abstract

“…Recently, SQS resulting from the intensity-dependent intracavity loss was reported in a Nd:LuAG laser through selffocusing and soft aperture loss in the gain medium itself [27]. Finally, let us examine the nonlinear dynamics observed outside the periodic spiking regime.…”

Section: 𝑐𝑟𝑦𝑠𝑡𝑎𝑙mentioning

confidence: 99%

Spiking ruby revisited: self-induced periodic spiking oscillations leading to chaotic state in a Cr:Al2O3 laser with cw 532-nm pumping

Otsuka¹,

Sudo²

2023

Preprint

0

View full text Add to dashboard Cite

This paper reexamines a 60-year-old mystery of spiking behavior in ruby lasers with a cw 532-nm pump, paying special attention to mode matching between the pump and lasing beam within a ruby crystal placed in a semi-confocal laser cavity. Periodic spiking oscillations were observed in a limited pump power regime, where spikes obeying the generic asymmetric hyperbolic function appeared at a repetition rate around 50 kHz and with a 130-150ns width and 0.1-0.6μJ energy depending on the pump power. The physics of the spiking behavior based on Kleinman’s mechanical approach and a plausible interpretation for the periodic spiking oscillation in terms of self-induced mode matching between the pump and laser beams through the self-induced Kerr-lens effect are addressed. The statistical nature inherent to spiking and the associated self-organized critical behavior in quasi-periodic spiking oscillations as well as chaotic states occurring outside the periodic spiking regime are also explored from a nonlinear dynamics point of view.

show abstract

Nanosecond Self-Q-Switching Nd:Luag Laser With High Repetition Rate

Cited by 6 publications

References 46 publications

Spiking ruby revisited: self-induced periodic spiking oscillations leading to chaotic state in a Cr:Al2O3 laser with cw 532-nm pumping

Spiking ruby revisited: self-induced periodic spiking oscillations leading to chaotic state in a Cr:Al2O3 laser with cw 532-nm pumping

Spiking ruby revisited: self-induced periodic spiking oscillations leading to chaotic state in a Cr:Al2O3 laser with cw 532-nm pumping

Spiking ruby revisited: self-induced periodic spiking oscillations leading to chaotic state in a Cr:Al2O3 laser with cw 532-nm pumping

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