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用激光二极管（简称ＬＤ）作为抽运光源，Ｎｄ：ＹＡＧ和Ｎｄ：ＹＶＯ４晶体作为激光工作物质，ＫＴＰ晶体作为倍频晶体，获得了５３２ｎｍ的单频绿光输出。两者的功率分别为２—３ｍＷ和５—６ｍＷ。将绿光单次通过碘吸收室时，经过控制和调谐激光频率，已检测到碘的多普勒加宽吸收谱线，谱线宽度约为８００ＭＨｚ。在激光器的压电陶瓷（ＰＺＴ）上，加上交流调制信号和直流扫描电压，通过信号检测、相敏检波、积分和高压放大等伺服回路，实现了在多普勒曲线中心处的频率稳定。
Laser diode (LD) was used as pumping source, Nd: YAG and Nd: YVO4 crystals were used as laser working substance, and KTP crystal was used as frequency doubling crystal to obtain single-frequency 532nm green light output. The power of the two is 2-3mW and 5-6mW respectively. When a single pass of green light passes through the iodine absorption chamber, the Doppler broadened absorption line of iodine has been detected after controlling and tuning the laser frequency with a spectral line width of about 800 MHz. On the PZT of the laser, plus the AC modulation signal and the DC scanning voltage, the frequency stability at the center of the Doppler curve is achieved through the servo loop of signal detection, phase sensitive detection, integration and high-voltage amplification.