Experimental investigation of the pulse width of a diode-pumped acousto-optically Q-switched Tm:YAG laser

Wu, Chunxia; Chen, Fei; Wang, Rui; Ju, Youlun

doi:10.1007/s10946-012-9264-0

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…As presented, the stable ultrashort pulse generated in our work, down to 109 ns, was the narrowest among the 2-D heterojunction materials, and the peak power was also competitive. Compared with other laser resonators in Table 1 , the cavity length of the resonator we designed is only an approximate 10 mm laser [ 49 ]. In addition, we coated a special optical film on the transparent surface of the laser crystal to effectively use the pump light in the laser crystal.…”

Section: Resultsmentioning

confidence: 99%

MXene/Graphene Oxide Heterojunction as a Saturable Absorber for Passively Q-Switched Solid-State Pulse Lasers

Wang

Qiao

2021

Nanomaterials

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Owing to their unique characteristics, two-dimensional (2-D) materials and their complexes have become very attractive in photoelectric applications. Two-dimensional heterojunctions, as novel 2-D complex materials, have drawn much attention in recent years. Herein, we propose a 2-D heterojunction composed of MXene (Ti2CTx) materials and graphene oxide (GO), and apply it to an Nd:YAG solid-state laser as a saturable absorber (SA) for passive Q-switching. Our results suggest that a nano-heterojunction between MXene and GO was achieved based on morphological characterization, and the advantages of a broadband response, higher stability in GO, and strong interaction with light waves in MXene could be combined. In the passively Q-switched laser study, the single-pulse energy was measured to be approximately 0.79 µJ when the pump power was 3.72 W, and the corresponding peak power was approximately 7.25 W. In addition, the generation of a stable ultrashort pulse down to 109 ns was demonstrated, which is the narrowest pulse among Q-switched solid-state lasers using a 2-D heterojunction SA. Our work indicates that the MXene–GO nano-heterojunction could operate as a promising SA for ultrafast systems with ultrahigh pulse energy and ultranarrow pulse duration. We believe that this work opens up a new approach to designing 2-D heterojunctions and provides insight into the formation of new 2-D materials with desirable photonic properties.

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Section: Resultsmentioning

confidence: 99%

MXene/Graphene Oxide Heterojunction as a Saturable Absorber for Passively Q-Switched Solid-State Pulse Lasers

Wang

Qiao

2021

Nanomaterials

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“…The radiation emission of around 2 mm corresponds to transition from the 3 F 4 level to the 3 H 6 level for Tm. In addition, the 3 F 4 level in Tm:YAG is characterized by a long fluorescence lifetime of around 11 ms, which is attractive from the point of view of using this material in Q-switched modulators [21]. Due to showing strong absorption bands in the 785 nm range, thulium can be pumped by AlGaAs laser diodes [22].…”

Section: Introductionmentioning

confidence: 99%

Effect of Tm2O3 doping on microstructure and optical properties of Tm:YAG ceramics

Sidorowicz

Nakielska

Wajler

et al. 2015

Ceramics International

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“…At the same time ,it has the advantages of a high mechanical strength and a large heat conductivity (0.13 W/(cm K)), which allows high-power operation. [1][2][3][4][5][6] In recently years, international scholars had studied Tm:YAG laser. The mostly reports were about CW Tm:YAG laser, and the condition for pulse Tm:YAG laser was rare.…”

Section: Introductionmentioning

confidence: 99%

“…The single pulse energy was 1.85mJ under the repetition of 100 Hz. [2] According to the reports currently, the output energy of pulse Tm: YAG laser was still low, so there would be a large research space for it. And most of them used continuous laser diode(LD) as pump sources.…”

Section: Introductionmentioning

confidence: 99%

Room temperature operation of 2.67 mJ pulse LD end pumped Q-switched Tm:YAG laser

Song

Chen

et al. 2014

SPIE Proceedings

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Due to 2 μm band in the absorption of water and CO 2 , the diode pumped solid state lasers with wavelength around 2 μm have important applications in laser medicine and remote sensing, such as it can be used as a scalpe or a light source of Coherent Doppler Wind Lidar and Differential Absorption Lidar. In the recently years, scientists have done much work on the development of such lasers. There're many reports on continuous Tm:YAG laser. However, the study on Q-switched Tm:YAG laser, which is more useful in applications, was very rare. As the light source of Coherent Doppler Wind Lidar, large energy and wide pulse width is desired. Current reports mostly adopted CW pumped source, but it would make a mount of heat. Pulse pumping method could reduce the heat accumulation and improve the heat stability of the laser. How to improve the single pulse energy was the focus of current study. In this paper, a single end bonding Tm:YAG crystal with Tm 3+ doping concentration of 3.5at.% was used. Acousto-optic (AO) Q-switched (GOOCH & HOUSEGO QS041-10M-HI8) operation was adopted in our experiment. In the repetition frequency of 100Hz, a maximum single energy of 2.67 mJ (measured by Ophir 30A-BB) and the narrowest pulse width of 149 ns (measured by Vigo PCI-3TE-12 detector) were achieved at room temperature. The M 2x was 1.31 and the M 2 y was 1.35 (measured by Spiricon Pyrocam-III). Tm:YAG laser was developed by using a pulse diode pumped L shape resonant cavity. The transmittance of the curve output mirror was 4% and the curvature radius of which was 300 mm. The output center wavelength of the laser was measured to be 2013.5 nm (measured by YOKOGAWA AQ6375).

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Experimental investigation of the pulse width of a diode-pumped acousto-optically Q-switched Tm:YAG laser

Cited by 7 publications

References 14 publications

MXene/Graphene Oxide Heterojunction as a Saturable Absorber for Passively Q-Switched Solid-State Pulse Lasers

MXene/Graphene Oxide Heterojunction as a Saturable Absorber for Passively Q-Switched Solid-State Pulse Lasers

Effect of Tm2O3 doping on microstructure and optical properties of Tm:YAG ceramics

Room temperature operation of 2.67 mJ pulse LD end pumped Q-switched Tm:YAG laser

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