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1)  half-waveplate(HWP)
1/2波片(HWP)
2)  1/2 retardation sheet
1/2波片
1.
Study about the impact of 1/2 retardation sheet on the polarization sounding of airborne lidar;
1/2波片对机载激光雷达偏振探测影响的研究
2.
Optimized design of 1/2 retardation sheet for measurement of airborne lidar polarization channels gain ratio;
用于机载激光雷达偏振通道增益比测量的1/2波片优化设计
3)  rotating half-wave plate
旋转1/2波片
1.
A full-field optical coherence tomography system using an achromatic phase shifter based on a rotating half-wave plate to implement phase shifting is developed.
研制了一套采用旋转1/2波片无色散移相器进行移相操作的全场光学相干层析成像系统。
4)  1/4 wave plate
1/4波片
1.
By analyzing the interference of two plane polarized light beam,the principle of elliptic polarization measurement is deduced and the principle of measuring the phase delay of crystals using 1/4 wave plate is introduced.
通过2束平面偏振光的合成推导出椭偏测量的基本原理,给出了用标准1/4波片测量晶体相位延迟量的测量原理。
5)  quarter-wave plate
1/4波片
1.
The basic principle of the laser longitudinal mode splitting is introduced briefly,and the Nd∶YAG laser longitudinal mode splitting produced by placing one and two quarter-wave plates in the cavity of a Nd∶YAG laser is investigated experimentally.
简要介绍了激光纵模分裂的基本原理,研究了腔内含有1个和2个1/4波片时产生Nd∶YAG激光纵模分裂的规律。
2.
Before being depolarized,the incident linearly polarized light is converted into an elliptical polarized light by a quarter-wave plate and is divided into two or.
设计了一种与入射线偏振光振动方向无关的低偏振度消偏器,该器件中利用人为的偏振相关延迟代替了保偏光纤的双折射,并在偏振相关型消偏器前增加了一个1/4波片,从而对任意方向振动的线偏振光具有相同的消偏能力,结构紧凑。
3.
A method to calibrate the fast axis of a quarter-wave plate by nulling the foundamental component was proposed and the calibration principle was analyzed.
激光器、起偏器、相位调制器、待标定1/4波片、检偏器和光电探测器构成标定光路,起偏器、检偏器的透光轴与相位调制器的振动轴分别成+45°和0°夹角。
6)  quarter wave plate
1/4波片
1.
A quarter wave plate (QWP) is frequently used in a pulse Nd : YAG laser resonator and its function is determined by its location and the direction of the fast axis in the resonator.
1/4波片在Nd:YAG激光器谐振腔内有多种应用,其作用由其在谐振腔内的位置和快轴方向决定。
补充资料:波片
波片
waveplate
    能使互相垂直的两光振动间产生附加光程差  或相位差)的光学器件。通常由具有精确厚度的石英、方解石或云母等双折射晶片做成,其光轴与晶片表面平行。以线偏振光垂直入射到晶片,其振动方向与晶片光轴夹 θ 角( θ≠0、 !!!B1315_1 ),入射的光振动分解成垂直于光轴(o振动)和平行于光轴(e振动)两个分量,它们对应晶片中的 o光和e光(见双折射)。晶片中的o光和e光沿同一方向传播,但传播速度不同(折射率不同),穿出晶片后两种光间产生(n0 ne)d光程差(见光程),d为晶片厚度,n0ne为o光和e光的折射率,两垂直振动间的相位差为Δj=2πn0ne d/λ。 两振动一般合成为椭圆偏振(见光的偏振)。Δj=2kπk为整数)时合成为线偏振光;Δj=(2k+1)π/2,且θ=45°时合成为圆偏振光 。凡能使o光和 e光产生λ/4附加光程差的波片称为四分之一波片。若以线偏振光入射到四分之一波片,且θ=45°,则穿出波片的光为圆偏振光;反之,圆偏振光通过四分之一波片后变为线偏振光。凡能使o光和e光产生λ/2附加光程差的波片称为二分之一波片。线偏振光穿过二分之一波片后仍为线偏振光,只是一般情况下振动方向要转过一角度。光程差可任意调节的波片称补偿器,补偿器常与起偏器结合使用以检验光的偏振状态。
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