ISSN:
1572-817X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Summary Limitations of present laser techniques (1) Availability of suitable lasers. Most important factors are (a) tunability over the atmospheric window regions, (b) stability and (c) long-term operating characteristics. (2) Atmospheric turbulence, which limits detection sensitivity. (3) Interferences, which limit selectivity. (4) Portability and costs, which severely limit utilization. Implications for instrumentation technology (1) Improved sensitivity of the detection/analysis system is required, including use of optical enhancement techniques, where applicable, by longer (or multiple) optical paths. (2) Elimination or minimization of interference effects by better spectral selection, primarily by use of multiple lines. (3) Tunable lasers which can be tuned over wider spectral regions, covering all windows are essential. (4) More information is needed to better characterize atmospheric turbulence in order that instrumentation may be designed to overcome the limitations it imposes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00619446
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