Fan Gao, Baoxing Xiong, Xiang Zhang, Xiao Yuan. FM-to-AM conversion in angular filtering based on transmitted volume Bragg gratings[J]. High Power Laser Science and Engineering, 2019, 7(2): 02000e34
- High Power Laser Science and Engineering
- Vol. 7, Issue 2, 02000e34 (2019)
Fig. 1. Frequency spectrum filtered by the TBGs and the FM-to-AM conversion: (a) and (b) TBG-1, (c) and (d) TBG-2, (e) and (f) TBG-3, (g) and (h) TBG-4.
Fig. 2. Dependence of the distortion criterion on the bandwidth.
![Dependence of the Bragg selectivity on the grating period and thickness: (a) $\unicode[STIX]{x1D706}_{0}=1053$ nm, $d=2.5$ mm, $\unicode[STIX]{x1D719}=90^{\circ }$; (b) $\unicode[STIX]{x1D706}_{0}=1053$ nm, $\unicode[STIX]{x1D6EC}=1.5~\unicode[STIX]{x03BC}\text{m}$, $\unicode[STIX]{x1D719}=90^{\circ }$.](/Images/icon/loading.gif){kind=icon}
Fig. 3. Dependence of the Bragg selectivity on the grating period and thickness: (a) $\unicode[STIX]{x1D706}_{0}=1053$ nm, $d=2.5$ mm, $\unicode[STIX]{x1D719}=90^{\circ }$ ; (b) $\unicode[STIX]{x1D706}_{0}=1053$ nm, $\unicode[STIX]{x1D6EC}=1.5~\unicode[STIX]{x03BC}\text{m}$ , $\unicode[STIX]{x1D719}=90^{\circ }$ .
Fig. 4. Bragg selectivity for TBG-3, TBG-3-O, TBG-4 and TBG-4-O.
Fig. 5. Frequency spectrum filtered by optimized TBGs and the FM-to-AM conversion: (a) and (b) TBG-3-O, (c) and (d) TBG-4-O.
Fig. 6. Dependence of the distortion criterion on the number of TBGs.
Fig. 7. Schematic diagram demonstrating FM-to-AM conversion on TBGs.
Fig. 8. Fluctuation of the inclined laser pulse.
Fig. 9. Frequency spectra filtered by TBGs and temporal profiles of the laser pulses: (a) and (b) TBG-I, (c) and (d) TBG-II, (e) and (f) TBG-III.
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Table 1. Structural parameters of TBGs.
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Table 2. Optimized structural parameters of TBG-3 and TBG-4.
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Table 3. Structural parameters of the TBGs in the experiment.
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Table 4. Results of the distortion criterion $\unicode[STIX]{x1D6FC}$
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