Cavity design peculiarities and influence of SESAM characteristics on output performances of a Nd:YVO4 mode locked laser oscillator

Brandus, Catalina-Alice; Dascalu, T.

doi:10.1016/j.optlastec.2018.10.034

Cited by 8 publications

(6 citation statements)

References 20 publications

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“…Additionally, a wedged Nd:LGSB crystal may lead to reduced etalon effects and stronger selectivity of the oscillating modes, thus outputting a stable ML operation with shorter transform limited pulses. In this respect, further mode locking experiments on Nd:LGSB crystal samples with one or two wedged facets, analogous to our previous studies on wedge-cut Nd:YVO 4 crystals [36], will be performed.…”

Section: Resultsmentioning

confidence: 86%

“…A further increase of the pump power drastically reduced the output, indicating that the resonator had reached the edge of the stability zone (in accordance with the resonator design). The laser crystal was uncoated and it was also not wedged [36]. The etalon effects could, therefore, be responsible for the mixed CML/QML behavior.…”

Section: Resultsmentioning

confidence: 99%

“…It is well known that by accurate design and control of the parameters of a SESAM device, different operation regimes, such as pure Q-switching, Q-switch mode-locking (QML), and continuous-mode locking (CML) could be obtained [31,32,33,34,35,36]. Herein, several Q-switching experiments with SESAM have been performed on the short a -cut Nd:LGSB.…”

Section: Methodsmentioning

confidence: 99%

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Efficient 1 µm Laser Emission of Czochralski-Grown Nd:LGSB Single Crystal

et al. 2019

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A 5.0-at.% Nd-doped La0.64Gd0.41Sc2.95(BO3)4 (Nd:LGSB) borate laser crystal was successfully grown by the Czochralski method, for the first time to our knowledge. The spectroscopic properties of the grown crystal are discussed and 1 µm laser emission, under end-pumping with a fiber-coupled diode laser at 807 nm, is reported. A c-cut Nd:LGSB medium yielded 1.35 W continuous-wave output power at 0.63 overall optical-to-optical efficiency, with respect to the absorbed pump power, together with the high 0.68 slope efficiency. With an a-cut Nd:LGSB sample, 0.81 W output power at 0.52 optical-to-optical efficiency was obtained. The laser emission performances under quasi-continuous wave pumping are presented as well, for both c-cut and a-cut crystals. Passive Q-switching was investigated with a semiconductor saturable absorber mirror (SESAM). Laser pulses with 2.2 µJ energy and 32.8 ns durations were recorded from a-cut Nd:LGSB. The average output power reached 0.36 W at 1.55 W absorbed pump power. Passive mode-locking with SESAM was achieved in a long Z-type resonator. Ultrashort pulses with 0.19 W average power, 1.63 nJ energy, and 1.43 ps pulse duration, at 118 MHz repetition rate, are demonstrated for the a-cut Nd:LGSB medium.

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

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Efficient 1 µm Laser Emission of Czochralski-Grown Nd:LGSB Single Crystal

et al. 2019

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“…[12]. Under the above experimental conditions, the stability of the laser resonator is judged by the ABCD matrix method [17] (the thermal focal length of the crystal was 500 mm at low pump power and 230 mm at high pump power). We measured the beam quality factor M 2 at the full output power of 8.7 W, taking advantage of the knife-edge method.…”

Section: Resultsmentioning

confidence: 99%

“…[12]. Under the above experimental conditions, the stability of the laser resonator is judged by the ABCD matrix method [17] (the thermal focal length of the crystal was 500 mm at low pump power and 230 mm at high pump power). mirrors (shown in the Figure 4) were measured with the spectrum analyzer Bristol 721A (with a resolution of ±0.2 ppm).…”

Section: Resultsmentioning

confidence: 99%

Efficient Ho:YVO4 Laser Double-Pass-Pumped by a Wavelength-Stabilized Laser Diode

Zhang

2022

Crystals

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Watt‐Level Second‐Order Topological Charge Ultrafast Green Vortex Laser with Quasi ‐2D PEA₂(CsPbBr₃)_n‐1PbBr₄ Perovskite Films Saturable Absorber

Liu,

Li,

Zhang

et al. 2024

Advanced Optical Materials

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Ultrafast vortex beams have significant scientific and practical value because of their unique phase properties in both the longitudinal and transverse modes, enabling multi‐dimensional quantum control of light fields. Directly generating watt‐level ultrafast vortex beams with large angular momentum has remained a major challenge due to the limitations of mode‐locked materials and existing spatiotemporal mode‐locking generation methods. In this study, quasi‐2D PEA2(CsPbBr3)n‐1PbBr4 perovskite films are prepared by an anti‐solvent method and employed for the first time in a mode‐locked resonator operating in free space. Utilizing the angle‐based non‐collinear pumping and frequency doubling techniques, the second‐order ultrafast green vortex beams with a power of up to 1.05 W and a duration of 373 ps are generated. Experimental findings demonstrate the strong nonlinear saturable absorption properties of quasi‐2D PEA2(CsPbBr3)n‐1PbBr4 perovskite films at high power levels, highlighting their considerable potential in ultrafast laser technology and nonlinear optics.

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Cavity design peculiarities and influence of SESAM characteristics on output performances of a Nd:YVO4 mode locked laser oscillator

Cited by 8 publications

References 20 publications

Efficient 1 µm Laser Emission of Czochralski-Grown Nd:LGSB Single Crystal

Efficient 1 µm Laser Emission of Czochralski-Grown Nd:LGSB Single Crystal

Efficient Ho:YVO4 Laser Double-Pass-Pumped by a Wavelength-Stabilized Laser Diode

Watt‐Level Second‐Order Topological Charge Ultrafast Green Vortex Laser with Quasi ‐2D PEA₂(CsPbBr₃)_n‐1PbBr₄ Perovskite Films Saturable Absorber

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Cavity design peculiarities and influence of SESAM characteristics on output performances of a Nd:YVO4 mode locked laser oscillator

Cited by 8 publications

References 20 publications

Efficient 1 µm Laser Emission of Czochralski-Grown Nd:LGSB Single Crystal

Efficient 1 µm Laser Emission of Czochralski-Grown Nd:LGSB Single Crystal

Efficient Ho:YVO4 Laser Double-Pass-Pumped by a Wavelength-Stabilized Laser Diode

Watt‐Level Second‐Order Topological Charge Ultrafast Green Vortex Laser with Quasi ‐2D PEA2(CsPbBr3)n‐1PbBr4 Perovskite Films Saturable Absorber

Contact Info

Product

Resources

About

Watt‐Level Second‐Order Topological Charge Ultrafast Green Vortex Laser with Quasi ‐2D PEA₂(CsPbBr₃)_n‐1PbBr₄ Perovskite Films Saturable Absorber