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Efficient orthogonally polarized lasers (OPLs) with power balance is of great significance in many fields. A gain-selfbalanced coaxial-end-pumped orthogonally polarized laser is proposed in this presentation. Using the orthogonal Nd:YVO4 crystal arrangement and a quarter wave plate, different waves were amplified by both crystals and the OPL could operate under the optimized condition. Compared with traditional methods, the beam quality and the coherence of the OPL were greatly improved and the coherence could also be actively switched by pump conditions. Theoretical explanations and discussions were given from the view of thermal effects and laser resonators. It is believed the gain-self-balanced coaxialend-pumped OPL has broad application prospects in precision measurement and other fields.
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