Hello.
Which types of diode lasers emit by modifying their wavelenght with filters and multipliers as DPSS for green ? Any other colors are produced with the same type of 'trick' ? Do infrared, red, yellow, blue, green, violet laser diodes emit their colors light directly ? Is green the only one DPSS ?

 

UV, red and IR all produce directly, blue, green and yellow are DPSS. Blue can also be direct emission.