Well, that does bring to mind another way to do it that some LED and Florescent lights use - chemical compounds that excite at one wavelength and emit at another. Various forms of phosphorus compounds are common. I don’t know that they would be specific enough for what Steve was asking for but I have seen enough engineering magic in my time to say it’s probably possible.
Mark > On Feb 21, 2022, at 10:55 AM, [email protected] wrote: > > Closest thing I can think of is an erbium doped amplifier. A "pump laser" > at one wavelength excites erbium molecules buried in the glass, and the > erbium emits photons at the signal wavelength to juice it up for a longer > ride down the line. > > .....but the changing wavelength isn't the feature, it's the amplifying > that's the feature. > > > > -----Original Message----- > From: AF <[email protected]> On Behalf Of Mark Radabaugh > Sent: Monday, February 21, 2022 7:26 AM > To: AnimalFarm Microwave Users Group <[email protected]> > Subject: Re: [AFMUG] can light wavelength be altered passively? > > Nothing that I am aware of. Lots of ways to filter and split, but the only > way I know of to change frequency of light involves relative motion between > the emitter and the receiver. > > Mark > >> On Feb 21, 2022, at 1:49 AM, Steve Jones <[email protected]> > wrote: >> >> is there such a thing as a filter that could passively alter a light > wavelength? some magic prism? >> >> like 1391 goes into the magic, non powered box gets touched in its no no > square and comes out 1591? >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
