Re: [Vo]:Acoustic demonstration of beats

2020-10-14 Thread Bob Higgins
Could the "cold radiation" be considered something like hole carriers in a semiconductor? On Wed, Oct 14, 2020 at 1:29 PM H LV wrote: > In my estimation Rumford's theory is the seed of an alternate theory of > radiation. It could still grow and blossom into a well > developed mathematical theor

Re: [Vo]:Acoustic demonstration of beats

2020-10-14 Thread Bob Higgins
Sean, What you are describing is entirely possible. Also, diode lasers can be driven into modes that produce sidebands just at the threshold of ordinary output - but it is hard to control the sidebands without an expensive "loop" receiver and some kind of lock-in control. Using 2 lasers is prett

Re: [Vo]:Acoustic demonstration of beats

2020-10-14 Thread Sean Logan
Could you use an Optical Parametric Amplifier to create your desired sidebands? Using one laser as the "signal input" and the other as the "pump" should give you an output containing sum and difference frequencies (sidebands, or heterodynes). On Wed, Oct 14, 2020, 12:29 H LV wrote: > In my est

Re: [Vo]:Acoustic demonstration of beats

2020-10-14 Thread H LV
In my estimation Rumford's theory is the seed of an alternate theory of radiation. It could still grow and blossom into a well developed mathematical theory of heat. I am interested in beat theory because it resonants (pun intended) with Rumford`s theory of hot and cold radiation, since both invo

[Vo]:Finite Element Analysis recommendations?

2020-10-14 Thread Sean Logan
Hello, Can you recommend software for performing Finite Element Analysis, or Method of Moments simulation of E and H fields around a 3D structure? I looked into FEMM, but that seems to only work in 2D. I am aware of commercial packages like CST, COMSOL, HFSS, etc. I dont have $20k to

Re: [Vo]:Acoustic demonstration of beats

2020-10-14 Thread AlanG
On 10/13/2020 6:03 PM, Jones Beene wrote: Have you been able to buy one? As you suggested, there's a gap in the wavelength of commercially available systems. Semiconductor diode lasers seem to be currently available down to 3.5 um (83 THz) https://www.toptica.com/products/tunable-diode-lasers

Re: [Vo]:Acoustic demonstration of beats

2020-10-14 Thread Bob Higgins
Unfortunately, at least for electrochemical LENR, the THz radiation will not penetrate the electrolyte (not even a micron). The dual laser approach worked because the two red lasers would pass through the electrolyte and the beat frequency was produced directly on the cathode surface without the T

RE: [Vo]:Acoustic demonstration of beats

2020-10-14 Thread JonesBeene
Good post, Bob Because of this effect (Letts/Cravens) and the optical phonon addition of Hagelstein and the Holmlid work also – it seems clear that laser irradiation of a metal matrix is perhaps the most promising open avenue for optimizing LENR gain. It would be great if THz lasers were a

Re: [Vo]:Acoustic demonstration of beats

2020-10-14 Thread Bob Higgins
Laser stimulation of LENR cells is an interesting subject. These experiments can probe the underlying mechanisms of LENR itself. One of the things that has not been characterized in the laser stimulation studies is the sideband noise of the lasers. All oscillators exhibit sideband noise. Oscilla