IOM 2020, Експеримент — Задача 6
Answer Sheet
Внимание: Бележка към темата
The source is the experimental-round answer sheet with the official answers overlaid in red; the task description with the experiment setup (videos) is not in the archive, and the answer-sheet pictures are available only with the answers drawn on them.
Условие
Q.6 a) What is the polarization of the light before the analyzer on the vertical stripe of the dark cross? Draw the direction in the picture.
Draw the direction here
Q 6 b) What rays inside the crystal, ordinary or extraordinary, form the vertical dark stripe?
Q.6 c) What is the polarization of the light before the analyzer on the horizontal stripe of the dark cross? Draw the direction in the picture.
Draw the direction here
Q.6 d) What rays inside the crystal, ordinary or extraordinary, form the horizontal dark stripe?
Q.6 e) What is the polarization of light at most points in bright areas? Write your answer in a few words in English.
Q.6 f) In which direction is the polarization of the ordinary and extraordinary rays directed at a point that lies on the bisector of the angle between the dark stripes of the cross? Draw in the picture.
Draw the directions here. Mark the direction for ordinary as «o», and for extraordinary as «e».
Отговори
- Q.6 a) Vertically
- Q 6 b) Extraordinary
- Q.6 c) Vertically
- Q.6 e) Elliptical
- Q.6 f) In any quadrant: e - radial, o - tangential
Решение
Answer 6 a) Vertically
Answer 6 b) Extraordinary
Answer 6 c) Verlically
Answer 6 e) Elliptical
Answer 6 f) In any quadrant: e - radial, o - tangential
Experimental data for second harmonic generation.
| KDP 0.5 cm | KDP 2.0 cm | KDP 4.0 cm | |||
|---|---|---|---|---|---|
| First harmonic Power, Watts | Second harmonic Power, Watts | First harmonic Power, Watts | Second harmonic Power, Watts | First harmonic Power, Watts | Second harmonic Power, Watts |
| 11040 | 0.801 | 6662 | 3.725 | 3413 | 1.902 |
| 20850 | 2.517 | 20170 | 35.31 | 5990 | 5.867 |
| 40230 | 10.111 | 36980 | 126.1 | 12580 | 26.88 |
| 74900 | 32.14 | 64740 | 390.2 | 22940 | 84.08 |
| 93200 | 54.09 | 82900 | 569 | 37210 | 240.2 |
| 126800 | 97.89 | 108400 | 1050 | 54780 | 565.9 |
| 147200 | 131.1 | 127400 | 1387 | 81350 | 1157 |
| 165100 | 169.7 | 151200 | 1977 | 97730 | 1574 |
| 171700 | 184.2 | 167400 | 2388 | 116300 | 2319 |
| 177500 | 2697 | 138000 | 3224 | ||
| 153000 | 4127 | ||||
| 155400 | 4331 |
Experimental data for third harmonic generation.
| First harmonic Power, Watts | Third harmonic Power, Watts | Second harmonic Power, Watts | Third harmonic Power, Watts |
|---|---|---|---|
| 7768 | 0.4 | 147 | 9.01 |
| 12950 | 1.5 | 432.8 | 30.13 |
| 26010 | 9.2 | 667.8 | 51.41 |
| 40890 | 30.77 | 1384 | 123.9 |
| 58310 | 70.1 | 2182 | 217.3 |
| 76790 | 110.9 | 3000 | 318.9 |
| 98830 | 210 | 4546 | 557 |
| 117900 | 265.5 | 4913 | 577.8 |
| 137000 | 412.9 | 5550 | 678.3 |
| 154600 | 502.8 | ||
| 162900 | 685.1 | ||
| 166200 | 676.7 |
Оригинал в Архива: exp.pdf