Self-polarization emission based on coherent combination of intracavity eigenmodes in Nd:YAG/Cr4+:YAG lasers

Kaifei Tang; Wenbin Liao; Da Lin; Bingxuan Li; Weidong Chen; Ge Zhang

doi:10.3788/COL202119.021401

Journals >Chinese Optics Letters >Volume 19 >Issue 2 >Page 021401 > Article

Chinese Optics Letters
Vol. 19, Issue 2, 021401 (2021)

Self-polarization emission based on coherent combination of intracavity eigenmodes in Nd:YAG/Cr⁴⁺:YAG lasers

Kaifei Tang^1、2, Wenbin Liao^2、3, Da Lin^2、4, Bingxuan Li^2、3, Weidong Chen^2、*, and Ge Zhang^2、3、5

Author Affiliations

¹College of Chemistry, Fuzhou University, Fuzhou 350108, China

²Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

³Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China

⁴University of Chinese Academy of Sciences, Beijing 100049, China

⁵Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Fuzhou 350108, China

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DOI: 10.3788/COL202119.021401 Cite this Article Set citation alerts

Kaifei Tang, Wenbin Liao, Da Lin, Bingxuan Li, Weidong Chen, Ge Zhang. Self-polarization emission based on coherent combination of intracavity eigenmodes in Nd:YAG/Cr⁴⁺:YAG lasers[J]. Chinese Optics Letters, 2021, 19(2): 021401 Copy Citation Text

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Schematic diagram for measurement and analysis of linear polarization regime of passively Q-switched Nd:YAG/Cr4+:YAG laser.

Fig. 1. Schematic diagram for measurement and analysis of linear polarization regime of passively Q-switched

Nd : YAG / {Cr}^{4 +} : YAG

laser.

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Output power and polarization extinction ratio (PER) as functions of the incident pump power under (a) free pump and (b) horizontal polarization pump. Insets show the polarization directions and beam profiles when the Glan prism was along the polarization directions.

Fig. 2. Output power and polarization extinction ratio (PER) as functions of the incident pump power under (a) free pump and (b) horizontal polarization pump. Insets show the polarization directions and beam profiles when the Glan prism was along the polarization directions.

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Fig. 3. PER versus pump polarization angle. 0° and 90° represent horizontal and vertical pump polarization, respectively, and other angles could be deduced.

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Fig. 4. Profile analyzation of the polarized beam near the extinction position, under (a)–(c) free pump and (d)–(f) horizontal polarization pump. The extinction position was defined as 0°.

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Fig. 5. Polarization mechanism for (a) intrinsic state and (b) combined state.

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Fig. 6. (a)–(c) Theoretically simulated results of profile analyzation near the extinction position.