double-exposure holography

Double-exposed holographic interferometry is an effective means in the plasma number density of electronic diagnosis, for it has such merits as non-contact measurement and non-disturbance by plasma luminescence.

二次曝光全息术是诊断等离子体电子数密度的一个有效测量方法,具有非接触式测量及不受等离子体发光干扰等优点。