Table 1 The nonlinear properties of the optical-lattice-like cladding waveguides.

From: Efficient Second Harmonic Generation in 3D Nonlinear Optical-Lattice-Like Cladding Waveguide Splitters by Femtosecond Laser Inscription

Number

Launched pump power at 1064 nm (mW)

Leaked pump power at 1064 nm (mW)

Maximum output power at 532 nm (mW)

Normalized conversion efficiency (%/W)

No. 1

613.3

603.5

0.675

11.15

No. 2

613.3

605.9

0.655

14.28

No. 3

635.0

627.9

0.505

11.30

No. 4

635.0

629.6

0.477

13.90