• Infrared and Laser Engineering
  • Vol. 53, Issue 5, 20240014 (2024)
Rui Wang1,2, Dongliang Zhang1,2,3, Chengcheng Zhang1,2, Qinghua Lin1,2..., Mingxin Luo1,2, Xiantong Zheng1,2,3 and Lianqing Zhu1,2,3|Show fewer author(s)
Author Affiliations
  • 1Key Laboratory of Ministry of Education Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing 100192, China
  • 2Instrumentation Science and Optoelectronic Engineering College, Beijing Information Science and Technology University, Beijing 100016, China
  • 3Guangzhou Nansha Intelligent Photonic Sensing Research Institute, Guangzhou 511462, China
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    DOI: 10.3788/IRLA20240014 Cite this Article
    Rui Wang, Dongliang Zhang, Chengcheng Zhang, Qinghua Lin, Mingxin Luo, Xiantong Zheng, Lianqing Zhu. Design of 1×16 phase-locked array of quantum cascade laser in mid-infrared band[J]. Infrared and Laser Engineering, 2024, 53(5): 20240014 Copy Citation Text show less
    (a) Schematic structure of a phase-locked array of quantum cascade lasers; (b) Schematic diagram of total reflection mirror structure; (c) Schematic structure of seed laser; (d) Schematic structure of the semi-reflector; (e) Schematic structure of array output port; (f) Schematic structure of single-mode waveguide
    Fig. 1. (a) Schematic structure of a phase-locked array of quantum cascade lasers; (b) Schematic diagram of total reflection mirror structure; (c) Schematic structure of seed laser; (d) Schematic structure of the semi-reflector; (e) Schematic structure of array output port; (f) Schematic structure of single-mode waveguide
    Schematic structure of the grating
    Fig. 2. Schematic structure of the grating
    Schematic structure of multimode interference
    Fig. 3. Schematic structure of multimode interference
    Schematic structure of bending waveguide
    Fig. 4. Schematic structure of bending waveguide
    (a) Waveguide optical limiting factor and loss versus upper InP cladding layer thickness; (b) Waveguide optical limiting factor and loss versus upper GaInAs layer thickness; (c) Waveguide optical limiting factor and loss versus lower GaInAs layer thickness; (d) Waveguide optical limiting factor and loss versus lower InP cladding layer thickness; (e) Waveguide optical limiting factor versus waveguide width; (f) The relationship between the effective refractive index of waveguide mode and the width of waveguide
    Fig. 5. (a) Waveguide optical limiting factor and loss versus upper InP cladding layer thickness; (b) Waveguide optical limiting factor and loss versus upper GaInAs layer thickness; (c) Waveguide optical limiting factor and loss versus lower GaInAs layer thickness; (d) Waveguide optical limiting factor and loss versus lower InP cladding layer thickness; (e) Waveguide optical limiting factor versus waveguide width; (f) The relationship between the effective refractive index of waveguide mode and the width of waveguide
    Transmission spectra versus different number of grating cycles
    Fig. 6. Transmission spectra versus different number of grating cycles
    (a) Comparison of transmission spectra with duty ratio of 0.6-0.9 and 0.5; (b) Comparison of transmission spectra with duty ratio of 0.1-0.4 and 0.5
    Fig. 7. (a) Comparison of transmission spectra with duty ratio of 0.6-0.9 and 0.5; (b) Comparison of transmission spectra with duty ratio of 0.1-0.4 and 0.5
    Transmission spectra of Bragg mirrors with different reflectivities. (a) 50% reflectivity; (b) 100% reflectivity
    Fig. 8. Transmission spectra of Bragg mirrors with different reflectivities. (a) 50% reflectivity; (b) 100% reflectivity
    Relation between LMMI and transmission of output port
    Fig. 9. Relation between LMMI and transmission of output port
    (a) 19 μm×126 μm MMI optical field without tapered waveguide; (b) 19 μm×126 μm MMI optical field with tapered waveguide
    Fig. 10. (a) 19 μm×126 μm MMI optical field without tapered waveguide; (b) 19 μm×126 μm MMI optical field with tapered waveguide
    Temperature distribution for different array distances. (a) Distance is 15 μm; (b) Distance is 25 μm; (c) Distance is 35 μm; (d) Distance is 45 μm
    Fig. 11. Temperature distribution for different array distances. (a) Distance is 15 μm; (b) Distance is 25 μm; (c) Distance is 35 μm; (d) Distance is 45 μm
    Optical field distribution of bending waveguides of different sizes. (a) 1300 μm×155.25 μm; (b) 550 μm×75.25 μm; (c) 380 μm×35.25 μm; (d) 280 μm×15.25 μm
    Fig. 12. Optical field distribution of bending waveguides of different sizes. (a) 1300 μm×155.25 μm; (b) 550 μm×75.25 μm; (c) 380 μm×35.25 μm; (d) 280 μm×15.25 μm
    Relation between transmission and Al2O3 film thickness
    Fig. 13. Relation between transmission and Al2O3 film thickness
    Far-field distribution of the array at different distances. (a) Far-field distribution at an array distance of 15 μm; (b) Far-field distribution at an array distance of 25 μm; (c) Far-field distribution at an array distance of 35 μm; (d) Far-field distribution at an array distance of 45 μm
    Fig. 14. Far-field distribution of the array at different distances. (a) Far-field distribution at an array distance of 15 μm; (b) Far-field distribution at an array distance of 25 μm; (c) Far-field distribution at an array distance of 35 μm; (d) Far-field distribution at an array distance of 45 μm
    Rui Wang, Dongliang Zhang, Chengcheng Zhang, Qinghua Lin, Mingxin Luo, Xiantong Zheng, Lianqing Zhu. Design of 1×16 phase-locked array of quantum cascade laser in mid-infrared band[J]. Infrared and Laser Engineering, 2024, 53(5): 20240014
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