Laser is an important component of airborne photoelectric long-range detection system,whose performance directly determines the systems application effect.Firstly,based on the laser ranging equation, different detection systems and the requirements of dual-wavelength detection are analyzed.Then,the semiconductor pumped solid-state laser is studied,and different implementation methods of dual wavelength are analyzed.Finally,the output of high-energy dual-wavelength laser is realized through experimental verification.The experimental results show that the output of dual-wavelength laser of 1.064 μm and 1.57 μm with high repetition rate and narrow pulse width can be realized by the technologies of electro-optic active-Q-switching and LD side-pumped resonator.