Photonics Research, Volume. 12, Issue 9, 2012(2024)
Frequency comb generation from the ultraviolet to mid-infrared region based on a three-stage cascaded PPLN chain Editors' Pick
Figures & Tables(6)
Fig. 1. Schematic of offset-free frequency comb covering the UV-to-MIR region. HNLF: high nonlinear fiber; PPLN WG: periodically poled lithium niobate waveguide; DFG: difference frequency generation; Ge: AR-coated germanium plate; BPF: MIR bandpass filter; YDFA: Yb-doped fiber amplifier; OPA: optical parametric amplification; OPM: off-axis parabolic mirror; HHG: high-order harmonic generation; H2–H8: frequency components of harmonics. The H2–H4 and H5–H8 were respectively observed on an infrared detector card and a white paper.
Fig. 2. (a) Injected spectrum (yellow line) and expanding SCG (blue line). (b) Visible–MIR spectrum emitted from DFG (measurement devices: Ocean Optics HR4000, Yokogawa AQ6370, and Bristol 771B).
Fig. 3. (a) NIR pump spectrum of OPA. (b) Calculated signal/idler profiles and corresponding periods with pump wavelengths at 1.025, 1.050, and 1.075 μm. (c) Spectrum of the signal light filtered from the comb source. Spectra from the OPAs using (d) a fan-out crosswise-poled PPLN crystal (OPA1) and (e) an axial-poled CPPLN waveguide (OPA2).
Fig. 4. (a) Average power of amplified MIR light after OPA1 and OPA2. (b) Pump-to-signal conversion efficiency as a function of average pump power.
Fig. 5. HHG spectral components of H1–H10 harmonics separately driven by MIR combs of (a) OPA1 and (b) OPA2. S1, S2, S3, and S4 represent four optical spectrometers, specifically corresponding to the models of Bristol 771B, Yokogawa AQ6375E, Yokogawa AQ6370, and Ocean Optics HR4000.
Table 1. Output Powers of the Generated Harmonic Components Using OPA1 and OPA2
View tableView in ArticleTable 1. Output Powers of the Generated Harmonic Components Using OPA1 and OPA2
OPA1 OPA2 HHG Wavelength Output Power Power Meter HHG Wavelength Output Power Power Meter H1 3157–3722 nm 30.12 mW Thorlabs S405C H1 3061–4027 nm 20.24 mW Thorlabs S405C H2 1402–1775 nm 24.29 mW Thorlabs S122C H2 1449–2040 nm 13.62 mW H3 984–1322 nm 12.26 mW H3 775–1316 nm 11.54 mW H4 829–909 nm 4.61 mW H4 H5 634–700 nm 0.42 mW Thorlabs S120VC H5 440–750 nm 1.18 mW H6 532–596 nm 0.73 mW H6 H7 467–508 nm 40.41 μW H7 H8 411–452 nm 30.26 μW H8 H9 375–388 nm 5.42 μW H9 384–407 nm 3.42 μW Thorlabs S120VC H10 353–361 nm 1.05 μW H10 354–369 nm 0.92 μW
Tools
Get Citation
Copy Citation Text
Xiong Qin, Daping Luo, Lian Zhou, Jiayi Pan, Zejiang Deng, Gehui Xie, Chenglin Gu, Wenxue Li, "Frequency comb generation from the ultraviolet to mid-infrared region based on a three-stage cascaded PPLN chain," Photonics Res. 12, 2012 (2024)
Paper Information
Category: Instrumentation and Measurements
Received: May. 6, 2024
Accepted: Jun. 17, 2024
Published Online: Aug. 28, 2024
The Author Email: Lian Zhou (lzhou@lps.ecnu.edu.cn), Wenxue Li (wxli@phy.ecnu.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20