Frequency conversion cavity for tunable continuous wave uv lasers

A method of generating a laser beam, said method comprising:

• passing a first laser beam and a second laser beam into a module, wherein the module comprises:
• an optically non-linear material operable to receive at least a first laser beam and a second laser beam and perform sum frequency mixing of the first and second laser beams to generate another laser beam,
• a first mirror and a second mirror, wherein the first mirror comprises a first aperture operable for passing at least one of the first or second laser beams through the first mirror and into the module, and wherein the second mirror comprises a second aperture operable for passing the generated laser beam through the second mirror and out of the module,
• wherein at least one of the first or second laser beams passes through the first aperture of the first mirror and into the module,
• wherein the optically non-linear material of the module performs sum frequency mixing of the at least two laser beams to generate the laser beam, and
• wherein the generated laser beam exits out of the module through the second aperture of the second mirror.