Airborne tunable diode laser system for trace gas measurementsSachse et al. (1976) have reported the development of an airborne tunable diode laser (TDL) system, named the Differential Absorption CO Monitor (DACOM). The absorption path was 10 m long and located in the free airstream along the fuselage of a C-54 aircraft. The present investigation is concerned with a modification of the DACOM instrument. Differences between the new instrument and the original one are related to a replacement of the external absorption path with a White cell. The instrument has the capability to suppress TDL excess noise. The laser refrigerator has been redesigned to permit an alternative method of cooling the TDL when electric power is not available.
Document ID
19840060518
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sachse, G. W. (NASA Langley Research Center Hampton, VA, United States)
Hill, G. F. (NASA Langley Research Center Hampton, VA, United States)
Hoell, J. M., Jr. (NASA Langley Research Center Hampton, VA, United States)