I thought about that option but he is talking about tunable frequency lasers, industrial fibre laser cutters do not have tunable frequency. On Thu, Jun 23, 2011 at 11:10 AM, Mike Harrison wrot= e: > >>As Bob stated earlier in this thread, fiber lasers are cool and they >>can have tunable frequency outputs. This tunability =A0will be between >>approximately 1200nm-1700nm in communication wavelength range.Even if >>you change the source of your fiber system (put a lower wavelength >>diode) this system will not work accurately. When you have smaller >>wavelength penetration depth will be lower thus reducing the quality >>of cutting process. Also fiber cable will melt if you put a really >>high power laser diode at source side. Tunable lasers are not for >>cutting and such, they are for communications. > > I think you are confusing fibre coupled laser diodes with =A0fibre lasers= .. > The latter use fibre as the lasing medium and are rapidly gaining ground = for industrial cutting in > the hundreds to thousands of =A0watt power range > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .