Saturable absorption characteristics of Bi<sub>2</sub>Se<sub>3</sub> in a 2 µm Q-switching bulk laser

Shang, Jingcheng; Feng, Tianli; Zhao, Shengzhi; Li, Tao; Pan, Zhongben; Zhao, Jia

doi:10.1364/oe.385927

Cited by 24 publications

(4 citation statements)

References 45 publications

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“…In recent years, the works based on the Bi 2 Se 3 -SA laser − ,− have made people realize the strong potential of Bi 2 Se 3 in generating ultrashort pulses, but it has not developed too many technical advantages of its high transmittance, which makes it difficult for the ultrafast fiber laser based on a Bi 2 Se 3 thin film to achieve multiscene applications. In this work, the excellent optical transmission characteristics of Bi 2 Se 3 has been verified in the environment of a femtosecond fiber laser for the first time.…”

Section: Optical Transmission: the Key Factor To Increase The Damage ...mentioning

confidence: 99%

Preparation of High Damage Threshold Device Based on Bi₂Se₃ Film and Its Application in Fiber Lasers

et al. 2023

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As a handicap for passive mode-locked lasers to operate stably for a long time, the undesirable damage threshold of saturable absorption devices means that it is difficult to maintain a normal operation state under the irradiation brought by ultrashort pulses. To reduce the damage probability when the saturable absorption devices interact with an ultrafast laser, some technologies have been developed to resist the high-energy irradiation of an ultrafast laser that will also increase the difficulty of laser construction at the same time. In this paper we put forward a new research idea to improve the low-damage threshold problem: optimizing the optical transmittance, which will avoid dissociation due to excessive heat accumulation. Using the melt and machine exfoliation method, the high optical transmittance (>95%) saturable absorption devices based on Bi 2 Se 3 are prepared, whose damage threshold (2.45 mJ/cm 2 ) is nearly 5 times higher than commercial SESAM. The devices applied to generate femtosecond pulses exhibit exciting nonlinear optical effects, which enable the mode-locked fiber laser to operate with a pulse duration of 195 fs and a signal-to-noise ratio of 81.73 dB. This discovery not only proves that the passive mode-locked laser-based high transmittance Bi 2 Se 3 can obtain reliable pulse output, but also provides a new perspective for the selection of saturable absorption materials in the future.

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Section: Optical Transmission: the Key Factor To Increase The Damage ...mentioning

confidence: 99%

Preparation of High Damage Threshold Device Based on Bi₂Se₃ Film and Its Application in Fiber Lasers

et al. 2023

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“…For this reason, these pulses have attracted the attention of researchers in practical and theoretical aspects. One the technique in the generation of high power pulses is the passive Q-switching (PQS) technique (3) , it involves the additions of saturable absorber material (SA) in the laser system (4) . Integrated performance between SA and the active medium (AM) in the PQS system that produces high power pulses named PQS pulse.…”

Section: Introductionmentioning

confidence: 99%

Rate Equations Model to Simulate the Performance of Passive Q-Switched Laser with Raman Medium Optical System

Saad,

Hussein,

Salih

2023

IJST

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Objective: Mathematical model of rate equations was proposed to simulate the performance of laser system to generate passive Q-switching laser pulse, which interacting with Raman medium to produce Stokes and anti-Stokes pulses. Methods: The proposed rate equations model has been tested theoretically in optical system consist of Nd:YVO 4, PbWO 4, andCr +4 :YAG as active medium, Raman medium, saturable absorber material respectively. Rung-Kutta-Fehelberg numerical method used in the solve of the model. The results were showed good compatibility compared with those of previous studies. After performance the verification steps, this model was tested in the study of the effect of saturable absorber ions concentration on the characteristics of passive Q-switching, Stokes, anti-Stokes pulses. Findings:The proposed rate equations model it is possible adopt in theoretical studies related to high power pulses interaction with Raman medium to generate Stokes and anti-Stokes pulses. Novelty: Add new mathematical equations and terms to that of previous mathematical models. The models consist of six equations instead of four or five equations.

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“…Falling into the eye-safe range, near-infared lasers have been extensively applied in such fields as laser processing, environmental monitoring, optical communication, medical diagnosis, [1][2][3][4] and laser spectroscopy, [5][6][7][8][9][10][11] especially 2 μm pulsed lasers. 12,13 Due to its low cost and structural simplicity, the PQS technology was accepted as a mainstream method of pulsed laser generation, with a two-dimensional material as a SA.…”

Section: Introductionmentioning

confidence: 99%

A diode‐pumped SnS₂ passively Q‐switched Tm‐doped pulsed laser

Shi

Sun

Xun

et al. 2022

Micro & Optical Tech Letters

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In this research, a diode-pumped SnS 2 passively Q-switched (PQS) V-type Tm-doped pulsed laser was demonstrated. The continuous-wave (CW) condition without SnS 2 saturable absorber (SA) was investigated first. A maximum output power of 1.26W with a slope efficiency of 24.28% was derived at an absorbed pump power of 7.11W under an output coupling of 5%. With the as-prepared SnS 2 SA employed, a series of stable Q-switched (QS) pulse trains were successfully realized. A minimum pulse width of 3.061 μs and a maximum repetition frequency of 70.42 kHz were generated through an output coupling of 5%, corresponding to a maximum output power of 621 mW. The delivered highest peak power and maximum single pulse energy were 2.90W and 12.41 μJ under an output coupling of 2.5%, respectively. These findings indicated that SnS 2 was a promising modulator for 2 μm all-solid-state pulsed laser generation.

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Saturable absorption characteristics of Bi₂Se₃ in a 2 µm Q-switching bulk laser

Cited by 24 publications

References 45 publications

Preparation of High Damage Threshold Device Based on Bi₂Se₃ Film and Its Application in Fiber Lasers

Preparation of High Damage Threshold Device Based on Bi₂Se₃ Film and Its Application in Fiber Lasers

Rate Equations Model to Simulate the Performance of Passive Q-Switched Laser with Raman Medium Optical System

A diode‐pumped SnS₂ passively Q‐switched Tm‐doped pulsed laser

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Saturable absorption characteristics of Bi2Se3 in a 2 µm Q-switching bulk laser

Cited by 24 publications

References 45 publications

Preparation of High Damage Threshold Device Based on Bi2Se3 Film and Its Application in Fiber Lasers

Preparation of High Damage Threshold Device Based on Bi2Se3 Film and Its Application in Fiber Lasers

Rate Equations Model to Simulate the Performance of Passive Q-Switched Laser with Raman Medium Optical System

A diode‐pumped SnS2 passively Q‐switched Tm‐doped pulsed laser

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Product

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Saturable absorption characteristics of Bi₂Se₃ in a 2 µm Q-switching bulk laser

Preparation of High Damage Threshold Device Based on Bi₂Se₃ Film and Its Application in Fiber Lasers

Preparation of High Damage Threshold Device Based on Bi₂Se₃ Film and Its Application in Fiber Lasers

A diode‐pumped SnS₂ passively Q‐switched Tm‐doped pulsed laser