FIELD: optics; instrument engineering.
SUBSTANCE: invention relates to acousto-optical tunable filter. Filter includes polariser, acousto-optical cell, analyser, beam splitter, photodetector, feedback electric circuit and radio-frequency generator. Acousto-optical cell provides collinear mode of diffraction with scattering radiation simultaneously in several diffraction orders. At analyser outlet interference of +1, -1 and 0 diffraction maxima is carried out. Feedback circuit links photodetector and piezoelectric transducer of cell. Radio-frequency generator is designed to control amplitude and frequency of generation signal and control position and width of filter passband.
EFFECT: reduced passband and possibility to control width and position of the passband.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ACOUSTOOPTIC SPECTRUM ANALYSER | 2014 |
|
RU2575500C1 |
| NONCOLLINEAR OPTICAL FILTER | 2002 |
|
RU2208824C1 |
| COLLINEAR OPTICAL FILTER | 2002 |
|
RU2208825C1 |
| DEVICE FOR ADAPTIVE TIME PROFILING OF ULTRASHORT LASER PULSES | 2017 |
|
RU2687513C1 |
| DOUBLE ACOUSTIC-OPTICAL MONOCHROMATOR | 2003 |
|
RU2242779C1 |
| DOUBLE ACOUSTIC MONOCHROMATOR ON SINGLE CHIP | 2013 |
|
RU2546996C1 |
| FLAME PHOTOMETER | 2013 |
|
RU2526795C1 |
| DEVICE FOR MEASURING TRANSIENT CHARACTERISTICS OF OPTICAL AMPLIFIERS | 2016 |
|
RU2650854C1 |
| ACOUSTIC-OPTICAL DEFLECTOR | 2005 |
|
RU2284559C1 |
| COLLINEAR ACOUSTOOPTICAL FILTER | 2008 |
|
RU2366988C1 |
