Polarization Stable Vertical Cavity Surface Emitting Laser Array Based on Proton Implantation

Abstract

Polarization stable characteristic of vertical cavity surface emitting laser array with rectangular element structure based on proton implantation is achieved. Arrays with different aperture sizes and different array scales are investigated. The maximum orthogonal polarization suppression ratio of a 6 × 6 array with 6 𝜇m × 4 𝜇m elements is as high as 16.1 dB at 51 mA. The 𝑥-polarization dominates 𝑦-polarization in the operation current range from the threshold to the saturated current. The full widths at half maximum in far-field profiles for 𝑥-polarization and 𝑦-polarization are 8.8 ∘ and 10.7 ∘ , respectively. These results suggest that stable polarization is available in the implant-defined VCSEL array.

Polarization control and tuning efficiency of tunable vertical-cavity surface-emitting laser with internal-cavity sub-wavelength grating*

“…In addition, because of the cylindrical symmetry and isotropic material properties of the device, the polarization behavior of tunable VCSELs could not be fixed reliably. [4,5] When the temperature and injection current is changed, the polarization mode will randomly be switched between TE and TM. Therefore, tunable VCSELs with polarization stabilization and wide wavelength tuning ranges are a research hotspot.…”

Cascaded third-harmonic-generation converter based on a single ADP crystal

“…[14] This is a kind of design based on polarization optics. [15][16][17][18][19][20][21][22] For 1064 nm, 40 ps, 10-Hz fundamental laser pulses, the maximum THG output was 1.13 mJ, and the highest overall conversion efficiency was 30.7%.…”