| タイトル | The 1.06 micrometer wideband laser modulator: Fabrication and life testing |
| 本文（外部サイト） | http://hdl.handle.net/2060/19760020450 |
| 著者（英） | Teague, J. R. |
| 著者所属（英） | McDonnell-Douglas Astronautics Co. |
| 発行日 | 1975-09-01 |
| 言語 | eng |
| 内容記述 | The design, fabrication, testing and delivery of an optical modulator which will operate with a mode-locked Nd:YAG laser at 1.06 micrometers were performed. The system transfers data at a nominal rate of 400 Mbps. This wideband laser modulator can transmit either Pulse Gated Binary Modulation (PGBM) or Pulse Polarization Binary Modulation (PPBM) formats. The laser beam enters the modulator and passes through both crystals; approximately 1% of the transmitted beam is split from the main beam and analyzed for the AEC signal; the remaining part of the beam exits the modulator. The delivered modulator when initially aligned and integrated with laser and electronics performed very well. The optical transmission was 69.5%. The static extinction ratio was 69:1. A 1000 hour life test was conducted with the delivered modulator. A 63 bit pseudorandom code signal was used as a driver input. At the conclusion of the life test the modulator optical transmission was 71.5% and the static extinction ratio 65:1. |
| NASA分類 | INSTRUMENTATION AND PHOTOGRAPHY |
| レポートNO | 76N27538
NASA-CR-144783 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/185273 |
