Design and Development of a High-Performance LED-Side-Pumped Nd:YAG Rod Laser

Shen, Jianheng; Huang, Xin; Jiang, Songtao; Jiang, Rongrong; Wang, Huiyin; Lu, Peng; Xu, Shaocong; Jiao, Mingyu

doi:10.1088/0256-307x/39/10/104201

Cited by 9 publications

(6 citation statements)

References 17 publications

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“…[10] And based on the absorption band of Ce 3+ centred at 460 nm, Nd,Ce:YAG [11] and Ce:YAG [12] were pumped by blue LEDs. In addition, passive [13,14] and active Q-switched [15,16] laser demonstrations were also available. However, due to the limitation of LED Lambertian emission, as a pump source, the work efficiency is still inefficient compared with laser diodes (LDs).…”

Section: Introductionmentioning

confidence: 99%

Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

Shen 沈,

Lu 芦,

Xu 徐

et al. 2024

Chinese Phys. B

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In this paper, we demonstrated a high-performance LED-side-pumped two-rod Nd,Ce:YAG laser with continuous-wave (CW) and acousto-optical (A-O) Q-switched operation. A symmetrical shaped flat-flat cavity with two identical LED-side-pumped laser modules was employed for power scalability. In the CW regime, the maximum output average power of laser at 1064 nm was 4.41 W, corresponding to the highest optical conversion efficiency of 5.3% and a slope efficiency of 12.4%. In the active Q-switched regime, the pulse energy of laser was as high as 0.89 mJ at a repetition rate of 800 Hz with a pulse width of 457.2 ns, corresponding to the highest peak output power was 1.94 kW and the M2 factor was measured to be about 8.8. To the best of our knowledge, this is the first demonstration and the highest performance of an CW LED-side-pumped two-rod laser Nd,Ce:YAG with watt-level output reported so far.

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Section: Introductionmentioning

confidence: 99%

Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

Shen 沈,

Lu 芦,

Xu 徐

et al. 2024

Chinese Phys. B

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“…[7] Research about the polarimetric properties of fiber lasers plays an important role in many applications such as optical sensors, optical communication, materials processing, and nano-photonics. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] In recent years, no matter whether studying bright and dark soliton pairs or polarized solitons, the use of saturable absorbers (SAs) has become necessary. [23][24][25][26] Therefore, continuous optimization of SAs is crucial for studying soliton states in fiber lasers.…”

mentioning

confidence: 99%

Optical Nonlinearity of Violet Phosphorus and Applications in Fiber Lasers

Yang 杨,

Qi 齐,

Li 李

et al. 2024

Chinese Phys. Lett.

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Violet phosphorus (VP) has attracted much attention due to its unique photoelectronic properties as a new two-dimensional nanomaterial, but its potential application in ultrafast photonics remains largely unexplored. In this paper, a D-shaped fiber is coated with VP to create a saturable absorber (SA), and its modulation depth is 3.68%. Subsequently, the SA is inserted into fiber laser, enabling successful generation of a dark soliton and bright-dark soliton pair through adjustment of the polarization state within the cavity. Through further study, mode-locked pulses are achieved and they are proved the existence of polarization-locked vector solitons. The results indicate that violet phosphorus can be used as polarization-independent saturable absorber.

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“…The results of the power density in the crystal was low, and the overlap between TEM00 and LED pump modes was deviated. [10][11][12][13][14][15] Thus, to capture more emission from the LED to enhance the coupling efficiency and enable higher mode matching, it was necessary to modify the LED emission mechanism, optimize the pump structure and increase the area fill factor to achieve a higher-efficiency LED pump laser. In this work, we analyze the emission mechanism of LEDs and address the coupling efficiency of LED-pumped lasers using non-diffuse scattering LEDs to rationalize the five-way pumping structure of LEDs.…”

mentioning

confidence: 99%

An LED-Side-Pumped Intracavity Frequency-Doubled Nd,Ce:YAG Laser Producing a 2W Q-Switched Red Beam

Shen 沈,

Xu 徐,

LU 芦

et al. 2024

Chinese Phys. Lett.

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We reported a high average power acousto-optic (A-O) Q-switched intracavity frequency-doubled red laser based on a high efficiency LED-pumped two-rod Nd,Ce:YAG laser module. Under quasi-continuous wave (QCW) operation conditions, the maximum output power of 1319.08 nm wavelength was achieved at 11.26 W at a repetition rate of 100 Hz, corresponding to the maximum optical efficiency of 13.9 % and a slope efficiency of 17.9 %. In the active Q-switched regime, the pulse energy of laser was as high as 800 μJ at a repetition rate of 10 kHz with the pulse width of 1.5 μs. Under a non-critical phase-matched KTP crystal condition, an average power 2.03 W of 658.66 nm through intracavity frequency-doubling was obtained at a repetition frequency of 10 kHz with a duration of 1.3 μs and the M2 factor was measured to be about 5.8. To the best of our knowledge, this is the highest average power of LED-pumped A-O Q-switched 1319 nm laser and intracavity frequency doubled red laser reported to date.

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Design and Development of a High-Performance LED-Side-Pumped Nd:YAG Rod Laser

Cited by 9 publications

References 17 publications

Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

Optical Nonlinearity of Violet Phosphorus and Applications in Fiber Lasers

An LED-Side-Pumped Intracavity Frequency-Doubled Nd,Ce:YAG Laser Producing a 2W Q-Switched Red Beam

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