PHASE-NOISE-LIMITED ACCURACY OF DISTANCE MEASUREMENTS IN A FREQUENCY-MODULATED CONTINUOUS-WAVE LIDAR WITH A TUNABLE TWIN-GUIDE LASER-DIODE

被引:24
作者
DIECKMANN, A [1 ]
AMANN, MC [1 ]
机构
[1] UNIV KASSEL,DEPT ELECT ENGN FB16,WORKING GRP SEMICOND ELECTR & OPTOELECTR III IV,D-34109 KASSEL,GERMANY
关键词
OPTICAL RADAR; SEMICONDUCTOR LASERS; FMCW-LIDAR; PHASE NOISE; FREQUENCY NOISE; RELATIVE ACCURACY OF DISTANCE MEASUREMENTS;
D O I
10.1117/12.190442
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The realization of a coherent frequency-modulated continuous-wave LIDAR aimed for the accurate measurement of short distances employing a distributed feedback tunable twin-guide laser diode is demonstrated. Theoretical calculations on the ultimate limits in accuracy of distance measurements as determined by the laser phase noise are carried out. A relative accuracy of 8x10(-5) (8 mu m) for a single-shot measurement has been achieved at a distance of 10 cm, which is significantly better than expected from the laser linewidth. The results presented here prove the predictions calculated from theory.
引用
收藏
页码:896 / 903
页数:8
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