Operation of multiphonon-assisted laser in the nanosecond time scales

Huichen Si; Fei Liang; Dazhi Lu; Haohai Yu; Huaijin Zhang; Yicheng Wu

doi:10.1117/1.APN.2.5.056004

Journals >Advanced Photonics Nexus >Volume 2 >Issue 5 >Page 056004 > Article

Advanced Photonics Nexus
Vol. 2, Issue 5, 056004 (2023)

Operation of multiphonon-assisted laser in the nanosecond time scales

Huichen Si, Fei Liang^*, Dazhi Lu, Haohai Yu^*..., Huaijin Zhang and Yicheng Wu|Show fewer author(s)

Author Affiliations

Shandong University, State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Jinan, China

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DOI: 10.1117/1.APN.2.5.056004 Cite this Article Set citation alerts

Huichen Si, Fei Liang, Dazhi Lu, Haohai Yu, Huaijin Zhang, Yicheng Wu, "Operation of multiphonon-assisted laser in the nanosecond time scales," Adv. Photon. Nexus 2, 056004 (2023) Copy Citation Text

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Unpolarized gain cross sections of Yb:YCOB crystal. Inset, Stark splitting energy levels of Yb3+ ion in Yb:YCOB crystal.

Fig. 1. Unpolarized gain cross sections of Yb:YCOB crystal. Inset, Stark splitting energy levels of

{Yb}^{3 +}

ion in Yb:YCOB crystal.

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Experimental setup for Yb:YCOB laser. SA represents saturable absorber (monolayer graphene and Cr:YAG). M1 is an input mirror directly coated on the front face of the Yb:YCOB crystal.

Fig. 2. Experimental setup for Yb:YCOB laser. SA represents saturable absorber (monolayer graphene and Cr:YAG). M1 is an input mirror directly coated on the front face of the Yb:YCOB crystal.

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Fig. 3. Graphene Q-switch pulse laser generation of Yb:YCOB crystal at 1130 nm. (a) Output powers of the Yb:YCOB crystal under CW and Q-switched regimes. The dashed lines represent the fitting curves.

η

is the slope efficiency. (b) Lasing wavelength under CW and Q-switched regimes.

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Fig. 4. Graphene Q-switched pulse laser properties. (a) Pulse width and repetition under different pump powers. (b) Corresponding individual pulse profiles. (c) Laser pulse trains with reception of 36.1 kHz.

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Fig. 5. Change of pulse energy and peak power with absorbed pump power.

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Fig. 6. Cr:YAG Q-switch pulse laser generation of Yb:YCOB crystal at 1130 nm. (a) Output powers of the Yb:YCOB crystal under CW and Q-switched regime. The solid lines represent the fitting curves.

η

is the slope efficiency. (b) Lasing wavelengths under CW and Q-switched regime.

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Fig. 7. (a) Pulse width and repetition under different pump powers. (b) Corresponding individual pulse profiles. (c) Laser pulse trains with reception of 2.3 kHz.

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Fig. 8. Change of pulse energy and peak power with absorbed pump power.

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Q-switch	$λ_{p}$ (nm)	$P_{avr}$ (W)	PRF (kHz)	$T_{p}$ (ns)	$E_{p}$ ( $μ J$ )	$P_{p}$ (kW)
AO²⁸	1027.5	0.95	0.2	11	4750	432
AO²⁹	1020 and 1023	0.53	0.1	21	5300	252.4
SA: Cr:YAG³⁰	1030 to 1035	2.14	4.5	9.3	476	51.2
SA: Cr:YAG³¹	1031.5	4.2	5.7	3.6	737	205
SA: Cr:YAG³²	1022 and 1031.8	4.13	3.23	5	1280	256
SA: ${MoTe}_{2}$ ³³	1035.5	1.58	704	52	2.25	0.04
SA: ${WS}_{2}$ ³⁴	1033.5 and 1036.4	4.05	606	66	6.67	0.1
SA: ${Bi}_{2} {Te}_{3}$ ³⁵	1030.3 and 1033.3	3.85	400	96	9.63	0.1
SA: GaAs³⁶	1032	5.7	116.7	153	48.8	0.32
SA: GaAs³⁷	1022.7	1.02	1	13.6	1020	75
SA: InGaAs QWs²⁷	1086	1.15	7	100	165	1.65
SA: graphene (this work)	1130.4	0.645	36.1	237	17.9	0.075
SA: Cr:YAG (this work)	1126.7	0.469	2.3	29	204	7.03

Table 1. Laser activities of Q-switched Yb:YCOB and Yb:GdCOB laser.^a

Huichen Si, Fei Liang, Dazhi Lu, Haohai Yu, Huaijin Zhang, Yicheng Wu, "Operation of multiphonon-assisted laser in the nanosecond time scales," Adv. Photon. Nexus 2, 056004 (2023)

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