Two-dimensional tellurene nanosheets as saturable absorber of passively <i>Q</i>-switched Nd:YAG solid-state laser

Tianhong Tang; Fang Zhang; Mengxia Wang; Zhengping Wang; Xinguang Xu

doi:doi:10.3788/COL202018.041403

Chinese Optics Letters, 2020, 18 (4): 041403, Published Online: Apr. 15, 2020

Two-dimensional tellurene nanosheets as saturable absorber of passively Q-switched Nd:YAG solid-state laser Download： 860次

Tianhong Tang ¹Fang Zhang ¹Mengxia Wang ¹Zhengping Wang ^1,2,*Xinguang Xu ^1,2,**

Author Affiliations

¹ State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

² Key Laboratory of Functional Crystal Materials and Device (Shandong University), Ministry of Education, Jinan 250100, China

Figures & Tables

Fig. 1. (a) Original bulk tellurium crystal, (b) prepared tellurene nanosheets dispersion liquid, and (c) tellurene nanosheets SA-coated sapphire substrate.

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Fig. 2. SEM images of (a) the bulk tellurium crystal and (b) the exfoliated tellurene nanosheet.

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Fig. 3. Characterizations of the tellurene thin film. (a) AFM image, (b) height profile, (c) HRTEM image, and (d) Raman spectrum.

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Fig. 4. (a) Linear transmission spectrum of the tellurene SA and (b) the nonlinear transmittance of the tellurene thin film.

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Fig. 5. Schematic diagram of the passively $Q$ -switched laser based on the tellurene.

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Fig. 6. 1064 nm passively $Q$ -switched laser characteristics of the tellurene SA. (a) The CW and PQS output powers. The inset shows the CW and PQS laser emission spectra. (b) The pulse duration and repetition frequency. (c) The single-pulse energy and peak power. (d) The pulse train and single-pulse profile.

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Fig. 7. 1.3 μm dual-wavelength passively $Q$ -switched laser characteristics of the tellurene SA. (a) The CW and PQS output powers. The inset is the CW and PQS laser emission spectra. (b) The pulse duration and repetition frequency. (c) The single-pulse energy and peak power. (d) The pulse train and single-pulse profile.

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Fig. 8. (a) 2D and (b) 3D facula profile of the passively $Q$ -switched 1.06 μm laser.

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Table1. Passively Q-switched Performance of Solid-state Laser for Different 2D Nanomaterials

Wavelength (μm)	SA material	Pulse properties					Reference
Wavelength (μm)	SA material	Pump threshold (W)	Average power (mW)	Repetition frequency (kHz)	Pulse width (ns)	Peak power (W)	Reference
1.06	Graphene	8.28	105	660	180.5	0.88	[39]
	BP	1.2	135	220	321	2	[40]
	${MoS}_{2}$	1.23	227	732	970	0.32	[41]
	${WS}_{2}$	1.49	201	481	112	3.72	[42]
	${ReS}_{2}$	4.4	670	274	1080	2.3	[38]
	Tellurene	0.72	140	535.8	97.5	2.68	This work
1.3	Graphene	2.2	890	135	466	14.14	[43]
	BP	0.9	157	175	363	3	[40]
	${MoS}_{2}$	6.9	52	77	729	0.93	[41]
	${ReS}_{2}$	0.12	78	214	403	0.9	[44]
	Tellurene	1.89	112	257.1	177.7	2.45	This work
2.0	Graphene	5.6	37	27.9	2080	0.84	[45]
	BP	–	12	17.7	3100	0.0002	[46]
	${MoS}_{2}$	1.65	100	48.09	800	2.59	[47]
	${WS}_{2}$	2.75	381	44.2	5600	1.54	[48]
	${ReS}_{2}$	1.15	245	677	415	0.87	[49]

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Tianhong Tang, Fang Zhang, Mengxia Wang, Zhengping Wang, Xinguang Xu. Two-dimensional tellurene nanosheets as saturable absorber of passively Q-switched Nd:YAG solid-state laser[J]. Chinese Optics Letters, 2020, 18(4): 041403.

Two-dimensional tellurene nanosheets as saturable absorber of passively Q-switched Nd:YAG solid-state laser Download： 860次

Fig. 1. (a) Original bulk tellurium crystal, (b) prepared tellurene nanosheets dispersion liquid, and (c) tellurene nanosheets SA-coated sapphire substrate.

Fig. 2. SEM images of (a) the bulk tellurium crystal and (b) the exfoliated tellurene nanosheet.

Fig. 3. Characterizations of the tellurene thin film. (a) AFM image, (b) height profile, (c) HRTEM image, and (d) Raman spectrum.

Fig. 4. (a) Linear transmission spectrum of the tellurene SA and (b) the nonlinear transmittance of the tellurene thin film.

Fig. 5. Schematic diagram of the passively $Q$ -switched laser based on the tellurene.

Fig. 8. (a) 2D and (b) 3D facula profile of the passively $Q$ -switched 1.06 μm laser.

Table1. Passively Q-switched Performance of Solid-state Laser for Different 2D Nanomaterials

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Two-dimensional tellurene nanosheets as saturable absorber of passively Q-switched Nd:YAG solid-state laser Download： 860次

Fig. 1. (a) Original bulk tellurium crystal, (b) prepared tellurene nanosheets dispersion liquid, and (c) tellurene nanosheets SA-coated sapphire substrate.

Fig. 2. SEM images of (a) the bulk tellurium crystal and (b) the exfoliated tellurene nanosheet.

Fig. 3. Characterizations of the tellurene thin film. (a) AFM image, (b) height profile, (c) HRTEM image, and (d) Raman spectrum.

Fig. 4. (a) Linear transmission spectrum of the tellurene SA and (b) the nonlinear transmittance of the tellurene thin film.

Fig. 5. Schematic diagram of the passively Q-switched laser based on the tellurene.

Fig. 8. (a) 2D and (b) 3D facula profile of the passively Q-switched 1.06 μm laser.

Table1. Passively Q-switched Performance of Solid-state Laser for Different 2D Nanomaterials

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Fig. 5. Schematic diagram of the passively $Q$ -switched laser based on the tellurene.

Fig. 8. (a) 2D and (b) 3D facula profile of the passively $Q$ -switched 1.06 μm laser.