Temperature tunable laser diode spectrograph
Abstract
Abstract A SPECTROGRAPH WHEREIN THE LIGHT FROM A LASER DIODE IS USED TO EXAMINE OPTICAL ABSORPTION AND REFLECTION CHARACTERISTICS OF A SAMPLE MATERIAL. A LASER DIODE IS MAINTAINED IN A TEMPERATURE CONTROLLED ENVIROMNMENT. THE VARIATION OF THE TEMPERATURE OF THE DIODE IS USED TO VARY THE WAVELENGTH OF THE SINGLE MODE EMISSION FROM THE DIODE. THE MONOCHROMATIC LIGHT EMITTED BY THE DIODE IS USED TO EXAMINE THE REFLECTION OR ABSORPTION EDGE OF SAMPLE MATERIALS. PHOTODIODES ARE USED TO CONVERT LIGHT PLUSES INTO ELECTRICAL PULSES. THE DEGREE TO WHICH THE SINGLE MODE, NARROW BAND LASER LIGHT IS ATTENUATED BY THE SAMPLE AND THE WAVELENGTH AT WHICH ABSORPTION OR REFLECTION EDGES OCCUR IS DETERMINED BY A DIFFERENTIAL METHOD.
Inventors
- 👤 Horst R Wittmann
Bibliographic Details
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| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |