TY - JOUR
T1 - Remarkable optical coupling enhancement with laser selective focusing devices
AU - Ji, Ruonan
AU - Wang, Shao Wei
AU - Chen, Feiliang
AU - Liu, Xingxing
AU - Chen, Yifang
AU - Wang, Wenjuan
AU - Lu, Wei
N1 - Publisher Copyright:
© Springer Science+Business Media New York 2016.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - In this paper, Fresnel zone plates (FZPs) have been employed as optical coupling devices to enhance the response of versatile laser detection systems. Two kinds of FZPs, amplitude-Fresnel zone plate (AFZP) and phase-Fresnel zone plate (PFZP), were fabricated and studied for comparison. The simulation and experiment results indicate that the FZPs have selective focusing abilities for wavelength and coherence of the incident lights, which contributes to high collection efficiency to the laser signals as well as suppression to the ambient lights. A 34 and 26 times gain in response were obtained when illuminated by coherent laser light by applying an AFZP and PFZP to an InGaAs/InP p-i-n photodetector, respectively. And a 30 % reduction in response was achieved by using an AFZP when illuminated by incoherent Tungsten-halogen lamp. In addition, 9.6 times of response enhancement has been observed after utilizing the AFZP for the laser ranging system.
AB - In this paper, Fresnel zone plates (FZPs) have been employed as optical coupling devices to enhance the response of versatile laser detection systems. Two kinds of FZPs, amplitude-Fresnel zone plate (AFZP) and phase-Fresnel zone plate (PFZP), were fabricated and studied for comparison. The simulation and experiment results indicate that the FZPs have selective focusing abilities for wavelength and coherence of the incident lights, which contributes to high collection efficiency to the laser signals as well as suppression to the ambient lights. A 34 and 26 times gain in response were obtained when illuminated by coherent laser light by applying an AFZP and PFZP to an InGaAs/InP p-i-n photodetector, respectively. And a 30 % reduction in response was achieved by using an AFZP when illuminated by incoherent Tungsten-halogen lamp. In addition, 9.6 times of response enhancement has been observed after utilizing the AFZP for the laser ranging system.
KW - Fresnel zone plates
KW - Laser detection
KW - Optical coupling enhancement
KW - Selective focusing device
UR - https://www.scopus.com/pages/publications/84989845798
U2 - 10.1007/s11082-016-0744-2
DO - 10.1007/s11082-016-0744-2
M3 - 文章
AN - SCOPUS:84989845798
SN - 0306-8919
VL - 48
JO - Optical and Quantum Electronics
JF - Optical and Quantum Electronics
IS - 10
M1 - 473
ER -