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Investigation On LD-Pumped Nd:YAG Intracavity LBO Frequency Doubling 659.5nm/669nm Dual-wavelength Laser

Posted on:2017-06-07Degree:MasterType:Thesis
Country:ChinaCandidate:R SunFull Text:PDF
GTID:2348330503993154Subject:Physical Electronics
Abstract/Summary:PDF Full Text Request
Recent years, researchers have had wide attention on terahertz which has many important applications in front research issues, like radar detection, medical imaging and astronomical observation. 659.5nm/669 nm dual-wavelength laser is well front part of light source of terahertz that can be achieved by difference frequency.659.5nm/669 nm dual-wavelength laser has been studied in this paper by combination of theory and experiment. First, with simulation of output performance of continuous and pulsing dual-wavelength laser, the output of dual-wavelength laser is achieved at ratio of 1:1 in theory. Via calculation and simulation of double-frequency theory, the crystal of LBO is designed for intracavity double-frequency operation to realize red laser of 659.5nm/669 nm. According to the resonator parameter of theoretical design, experiment of continuous and Q-switching output of1319nm/1338 nm dual-wavelength laser is achieved. In continuous operation, the output power of 5.94 W is finally obtained, beam quality M2=1.39, the ratio of dual-wavelength laser power close to 1:1. In Q-switching operation, at the repetition frequency of 10 kHz, the pulsing laser output of peak power of 5865 W is obtained.Finally, 659.5nm/669 nm dual-wavelength laser is realized on the basis of the above work. The output power of 1.3W is obtained, the ratio of power close to 1:1, beam quality M2=1.5.
Keywords/Search Tags:Diode-pumped, dual-wavelength laser, 659.5/669nm, Nd:YAG
PDF Full Text Request
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