1. Two-dimensional thermometry measurements in confined swirl flames using filtered Rayleigh scattering

   • Meng Li
   • Bo Yan
   • Shuang Chen

   Regular Paper 04 May 2021 Article: 80

   

2. Image processing methods for Rayleigh scattering measurements of diesel spray mixing at high repetition rate

   • Julien Manin
   • Lyle M. Pickett
   • Jonathan H. Frank

   OriginalPaper 02 May 2021 Article: 79

   

3. 80-W dual-wavelength green pulsed laser based on a Yb-doped rod-type fiber amplifier

   • Yong-Ho Cha
   • Yonghee Kim
   • Do-Young Jeong

   OriginalPaper 01 May 2021 Article: 78

   

4. High-efficiency CW and passively Q-switched operation of a 2050 nm L-shaped Tm³⁺:Y₂O₃ ceramic laser in-band fiber-laser pumped at 1670 nm

   • O. L. Antipov
   • Yu. A. Getmanovskiy
   • S. S. Balabanov

   Rapid Communication 29 April 2021 Article: 77

   

5. Compact Ho:YAP laser intra-cavity pumped by a Tm:YAP laser with identical crystallographic orientation

   • Jing Deng
   • Huawen Hu
   • Wenxiong Lin

   OriginalPaper 29 April 2021 Article: 76

   

6. Structuring a laser beam subject to optical Kerr effect for improving its focusing properties

   • A. Hasnaoui
   • M. Fromager
   • K. Ait-Ameur

   OriginalPaper 29 April 2021 Article: 75

   

7. Evolution of self-organized nanograting from the pre-induced nanocrack-assisted plasma–laser coupling in sapphire

   • Qinxiao Zhai
   • Hongliang Ma
   • Ye Dai

   OriginalPaper 28 April 2021 Article: 74

   

8. Modal conversion of transverse mode-locked laser beams

   • Florian Schepers
   • Carsten Fallnich

   Regular Paper Open access 27 April 2021 Article: 73

   

9. Light diffraction from a phase grating at oblique incidence in the intermediate diffraction regime

   • Georg Heuberger
   • Jürgen Klepp
   • Martin Fally

   OriginalPaper Open access 26 April 2021 Article: 72

   

10. Tuning higher order electric field resonances in plasmonic hexagonal arrays by oxygen-plasma treatment

    • Nonthanan Sitpathom
    • Judith M. Dawes
    • Tanyakorn Muangnapoh

    OriginalPaper 26 April 2021 Article: 71

    

11. A novel design of all-optical high speed and ultra-compact photonic crystal AND logic gate based on the Kerr effect

    • Ehsan Veisi
    • Mahmood Seifouri
    • Saeed Olyaee

    OriginalPaper 26 April 2021 Article: 70

    

12. A tunable ultra-wideband cross-polarization conversion based on the band splicing technology

    • Xinlei Zhang
    • Haining Ye
    • Haifeng Zhang

    OriginalPaper 25 April 2021 Article: 69

    

13. Grating-coupled surface-plasmon fluorescence DNA sensor

    • Amal Kasry
    • Andreas Nicol
    • Wolfgang Knoll

    OriginalPaper 23 April 2021 Article: 68

    

14. Investigation of the net gain behavior in Er:Ti:LiNbO₃ waveguide amplifier by an erbium-doped As₂S₃ and undoped As₂S₃ overlay

    • Keyvan Ahmadi
    • Abdolnasser Zakery

    OriginalPaper 22 April 2021 Article: 67

    

15. High-power transverse mode selection of Bessel–Gaussian beams

    • M. Mousavi
    • H. Nadgaran
    • S. Salimian

    OriginalPaper 21 April 2021 Article: 66

    

16. Relationship between degree of polarization and two-time degree of coherence of electromagnetic fields

    • Rajneesh Joshi
    • Nishant Kumar Pathak
    • Bhaskar Kanseri

    OriginalPaper 20 April 2021 Article: 65

    

17. Application of LIBS technology for quantification of Er³⁺ ions in tellurite glasses

    • Ana Karen Frías-Sánchez
    • Jesús Javier Leal
    • Eugenio Rodríguez

    OriginalPaper 17 April 2021 Article: 64

    

18. Sensitivity amplification of high birefringence fiber loop mirror temperature sensor with Vernier effect

    • Zhichao Ding
    • Zhongwei Tan
    • Hongpei Gao

    OriginalPaper 09 April 2021 Article: 63

    

19. Measurement of characteristic parameters and self-generated electric and magnetic fields (SGEMFs) of laser-induced aluminum plasma

    • Fida Hussain
    • Shazia Bashir
    • Haroon Ahmad

    OriginalPaper 09 April 2021 Article: 62

    

20. Phase shifted-lateral shearing digital holographic microscopy imaging for early diagnosis of cysts in soft tissue-mimicking phantom

    • Tugba Ozge Onur
    • Gulhan Ustabas Kaya
    • Ceren Kaya

    Regular Paper 04 April 2021 Article: 61

    

21. Intensity pattern types in broadband Fourier domain mode-locked (FDML) lasers operating beyond the ultra-stable regime

    • Mark Schmidt
    • Christin Grill
    • Christian Jirauschek

    OriginalPaper Open access 03 April 2021 Article: 60