FIELD: instrumentation.
SUBSTANCE: invention relates to optical instrumentation and pertains to a method for determining the "fast" axis of a quarter-wave plate. The method includes passing linearly polarised emission at the working wavelength of the plate through the analysed quarter-wave plate, recording the transmitted emission by means of a photoelectric converter, and determining the "fast" axis of the plate from the polarity of the electrical signal generated by the photoelectric converter. The linearly polarised emission is normally incident on the analysed quarter-wave plate, wherein the emission polarisation plane coincides with the bisector of the angle between the "fast" and "slow" optical axes of the plate. The passed emission has circular polarisation, and the photoelectric converter has the property of generating, when impacted by circularly polarised emission, an electric signal, the polarity whereof depends on the direction of rotation of the electric field vector in the recorded emission.
EFFECT: structural simplification of the measuring apparatus.
1 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR DETERMINING POLARIZATION SIGN OF CIRCULAR AND ELLIPTICALLY POLARIZED LASER RADIATION | 2016 |
|
RU2631919C1 |
| DEVICE FOR MEASUREMENT OF OPTICAL ACTIVITY AND DOUBLE REFRACTION INDUCED BY MAGNETIC OR ELECTRIC FIELDS IN LIGHT PETROLEUM PRODUCTS | 2006 |
|
RU2308021C1 |
| METHOD OF DETERMINING CIRCULAR POLARISATION SIGN OF LASER RADIATION | 2010 |
|
RU2452924C1 |
| OPTICAL INTERFERENCE CURRENT METER | 2021 |
|
RU2767166C1 |
| METHOD FOR MEASURING HEIGHT OF MICROIRREGULARITIES OF ROUGH SURFACE AND DEVICE FOR EFFECTING SAME | 0 |
|
SU1302141A1 |
| LASER DOPPLER VELOCITY SENSOR | 2016 |
|
RU2638580C1 |
| METHOD AND DEVICE FOR MEASURING CONCENTRATION OF OPTICALLY ACTIVE SUBSTANCES IN CLOUDY SOLUTIONS | 2006 |
|
RU2325630C1 |
| OPTOELECTRONIC ANALYSER OF OPTICAL RADIATION POLARISATION | 2011 |
|
RU2477457C1 |
| METHOD OF MEASURING OPTICAL ADSORPTION OF HIGHLY TRANSPARENT MATERIALS AND DEVICE FOR EFFECTING SAME (VERSIONS) | 0 |
|
SU1182879A1 |
| METHOD AND FIBRE-OPTIC DEVICE (VERSIONS) FOR MEASURING ELECTRIC CURRENT AND MAGNETIC FIELD | 2012 |
|
RU2497135C1 |
