Passively Q-Switched a-Cut Er, Yb∶YAl3(BO3)4 Microchip Laser

Songqing Zha; Yujin Chen; Mingyao Deng; Yanfu Lin; Bingxuan Li; Yuqi Zou; Wenbin Liao; Zhanglang Lin; Ge Zhang

doi:10.3788/CJL202148.1301004

Journals >Chinese Journal of Lasers >Volume 48 >Issue 13 >Page 1301004 > Article

Chinese Journal of Lasers
Vol. 48, Issue 13, 1301004 (2021)

Passively Q-Switched a-Cut Er, Yb∶YAl₃(BO₃)₄ Microchip Laser

Songqing Zha^1、2, Yujin Chen^2、*, Mingyao Deng^2、4, Yanfu Lin², Bingxuan Li², Yuqi Zou³, Wenbin Liao², Zhanglang Lin², and Ge Zhang^2、**

Author Affiliations

¹School of Chemistry, Fuzhou University, Fuzhou, Fujian 351100, China

²Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 351100, China

³Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200000

⁴College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 351100, China

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DOI: 10.3788/CJL202148.1301004 Cite this Article Set citation alerts

Songqing Zha, Yujin Chen, Mingyao Deng, Yanfu Lin, Bingxuan Li, Yuqi Zou, Wenbin Liao, Zhanglang Lin, Ge Zhang. Passively Q-Switched a-Cut Er, Yb∶YAl₃(BO₃)₄ Microchip Laser[J]. Chinese Journal of Lasers, 2021, 48(13): 1301004 Copy Citation Text

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Fig. 1. Diagram of laser operating mechanism of energy level structure in Er, Yb∶YAB crystal

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Transmission spectrum of Co2+∶MgAl2O4 crystal, and experimental setup for passively Q-switched a-cut Er, Yb∶YAB microchip laser. (a) Transmission spectrum of Co2+∶MgAl2O4 crystal; (b) experimental setup for passively Q-switched a-cut Er, Yb∶YAB microchip laser

Fig. 2. Transmission spectrum of Co²⁺∶MgAl₂O₄ crystal, and experimental setup for passively Q-switched a-cut Er, Yb∶YAB microchip laser. (a) Transmission spectrum of Co²⁺∶MgAl₂O₄ crystal; (b) experimental setup for passively Q-switched a-cut Er, Yb∶YAB microchip laser

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Fig. 3. Experimental performance of microchip laser. (a) Average output power and single pulse energy; (b) repetition rate and pulse duration

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Fig. 4. Results recorded by oscilloscope for incident power of 7.2 W. (a) Pulse train and pulse repetition rate; (b) single pulse profile and pulse duration

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Fig. 5. Test result of pulse laser polarization, and 2D and 3D images of pulse output spots. (a) Test result of pulse laser polarization; (b) 2D and 3D images of pulse output spots

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Hostcrystal	Representativecrystal	Pumpwavelength /nm	Laserwavelength /nm	Conversionefficiency /%	Pumppower /W	Maximumoutputpower /W	Ref. No
Borate	Er,Yb∶YAl₃(BO₃)₄	976	1550	39.80	7.20(incident power)	2.00	[16]
Silicate	Er, Yb∶Lu₂Si₂O₇	976	1564	20.00	5.50(absorbable power)	0.94	[19]
Tungstate	Er, Yb∶KY(WO₄)₂	980	1590	1.66	6.50(absorbable power)	0.08	[20]
Other	Er, Yb∶YAG	965	1645	7.00	0.45(absorbable power)	0.03	[21]
Other	Er, Yb∶YVO₄	980	1604	5.40	2.25(absorbable power)	0.13	[22]

Table 1. Conversion efficiency and maximum output power of various representative crystals in continuous laser experiments

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