A system comprising; a laser source configured to produce a first laser light having a first wavelength along a beam path and configured to produce a second laser light having a second wavelength along the beam path; and a beam splitter module (302, 602, 702) comprising: a first dichroic element configured to receive the first laser light along the beam path and pass the first laser light having the first wavelength, the first dichroic element further configured to receive the second laser light along the beam path and reflect the second laser light having the second wavelength, a first mirror configured to receive the second laser light reflected from the first dichroic element and reflect the received second laser light, a second mirror configured to receive the second laser light reflected from the first mirror and reflect the received second laser light, and a second dichroic element configured to receive from the first dichroic element the first laser light and pass the first laser light having the first wavelength and configured to receive the second laser light reflected from the second mirror and reflect the second laser light having the second wavelength, wherein the second dichroic element is configured to pass the first laser light to a target material near an irradiation site and to reflect the second laser light to the irradiation site. a laser source configured to produce a first laser light having a first wavelength along a beam path and configured to produce a second laser light having a second wavelength along the beam path; and a beam splitter module (302, 602, 702) comprising: a first dichroic element configured to receive the first laser light along the beam path and pass the first laser light having the first wavelength, the first dichroic element further configured to receive the second laser light along the beam path and reflect the second laser light having the second wavelength, a first mirror configured to receive the second laser light reflected from the first dichroic element and reflect the received second laser light, a second mirror configured to receive the second laser light reflected from the first mirror and reflect the received second laser light, and a second dichroic element configured to receive from the first dichroic element the first laser light and pass the first laser light having the first wavelength and configured to receive the second laser light reflected from the second mirror and reflect the second laser light having the second wavelength, wherein the second dichroic element is configured to pass the first laser light to a target material near an irradiation site and to reflect the second laser light to the irradiation site. a first dichroic element configured to receive the first laser light along the beam path and pass the first laser light having the first wavelength, the first dichroic element further configured to receive the second laser light along the beam path and reflect the second laser light having the second wavelength, a first mirror configured to receive the second laser light reflected from the first dichroic element and reflect the received second laser light, a second mirror configured to receive the second laser light reflected from the first mirror and reflect the received second laser light, and a second dichroic element configured to receive from the first dichroic element the first laser light and pass the first laser light having the first wavelength and configured to receive the second laser light reflected from the second mirror and reflect the second laser light having the second wavelength, wherein the second dichroic element is configured to pass the first laser light to a target material near an irradiation site and to reflect the second laser light to the irradiation site.