Sum-Frequency Generation of High-Energy and High-Beam-Quality Ultraviolet Pulses

Table 1

Calculated (𝑀²_𝑥,𝑀²_𝑦) values (dimensionless) based on measured images of near and far fields.

Beam	𝑀^2𝑥	𝑀^2𝑦
Laser fundamental	2.1	2.4
OPO signal (~8 mJ)	1.6	2.4
3𝜔	3.3	4.7
SFG (~13 mJ)	4.2	5.2