https://opg.optica.org/oe/fulltext.cfm?uri=oe-26-20-25582&id=398345
From: Steve Jones Sent: Monday, February 21, 2022 1:30 PM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] can light wavelength be altered passively? Time for a visit to shark tank On Mon, Feb 21, 2022, 2:15 PM <dmmoff...@gmail.com> wrote: We have a product idea. All we need now is a physicist, an engineering team, and a billion dollars. -----Original Message----- From: AF <af-boun...@af.afmug.com> On Behalf Of Mark Radabaugh Sent: Monday, February 21, 2022 3:01 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Subject: Re: [AFMUG] can light wavelength be altered passively? 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, dmmoff...@gmail.com 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 <af-boun...@af.afmug.com> On Behalf Of Mark Radabaugh > Sent: Monday, February 21, 2022 7:26 AM > To: AnimalFarm Microwave Users Group <af@af.afmug.com> > 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 <thatoneguyst...@gmail.com> > 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 >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -------------------------------------------------------------------------------- -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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