Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

Oh but thats what the marketing blurb even says. It hit me later that the thing that runs out is still the same CS oven Regards Paul WB8TSL On Mon, Mar 20, 2017 at 3:09 PM, Attila Kinali wrote: > On Sat, 18 Mar 2017 19:25:28 + > "Poul-Henning Kamp"

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

On Sat, 18 Mar 2017 19:25:28 + "Poul-Henning Kamp" wrote: > >The A magnet being replaced by the A laser will for the same flow from > >the cesium oven produce twice as much atoms and thus improve signal to > >noise. > > It will generate more than twice the (usable)

[time-nuts] Optical Cesium or maybe Cesium "light"!

Here's some marketing eyewash for the thing... it has a 100 MHz output... http://www.heritek.com.cn/Private/Files/3037bb9d8c45dac855ad.pdf Darn it... I just bought a 5071A. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

Hi Get a bigger bag :) Bob > On Mar 18, 2017, at 4:45 PM, Wojciech Owczarek > wrote: > > I tried lifting it but it wouldn't fit in my bag :( > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

I tried lifting it but it wouldn't fit in my bag :( ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

Hi, On 03/18/2017 08:25 PM, Poul-Henning Kamp wrote: In message <2254f8a0-9ea7-e0d3-18d7-90918985c...@rubidium.dyndns.org>, Magnus D anielson writes: The A magnet being replaced by the A laser will for the same flow from the cesium oven produce twice as much atoms and thus improve

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

Hi Paul, On 03/18/2017 03:32 PM, paul swed wrote: I am in the same frame of mind had the market, so no need to evolve. But also it seems the business segment is so small its unclear that there is a good business case to build them.These days if its not $B little interest. Chuckle. Hp dumped

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

In message <2254f8a0-9ea7-e0d3-18d7-90918985c...@rubidium.dyndns.org>, Magnus D anielson writes: >The A magnet being replaced by the A laser will for the same flow from >the cesium oven produce twice as much atoms and thus improve signal to >noise. It will generate more than twice the

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

In message <7765b488-bc22-d5af-3f62-d356e4aac...@karlquist.com>, "Richard (Rick ) Karlquist" writes: >NIST-7 has a reversible beam, which cancels out end to end phase >error in the CBT. That works in terms of being a frequency standard, >but not for a clock, because you don't have

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

Did take a look at the various papers. The older Osciliquartz document does overlap the new one. But the old one actually supplies more details. Good reads. It is interesting that the major consumable components like laser diodes are all external. So what is the true life of the unit. Pretty

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

I am in the same frame of mind had the market, so no need to evolve. But also it seems the business segment is so small its unclear that there is a good business case to build them.These days if its not $B little interest. Chuckle. Hp dumped cesiums and test equipment and then symetricom was

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

Rick, On 03/18/2017 05:32 PM, Richard (Rick) Karlquist wrote: On 3/18/2017 3:13 AM, Magnus Danielson wrote: The NIST-7 was a optically pumped cesium beam, and a pre-cursor to the fountain clocks. There should be a bunch of papers on it. I am however somewhat wondering about if we will see

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

On 3/18/2017 3:13 AM, Magnus Danielson wrote: The NIST-7 was a optically pumped cesium beam, and a pre-cursor to the fountain clocks. There should be a bunch of papers on it. I am however somewhat wondering about if we will see this coming out of Oscilloquartz. We will see. NIST-7 has a

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

The NIST-7 was a optically pumped cesium beam, and a pre-cursor to the fountain clocks. There should be a bunch of papers on it. If you look on the picture from wikipedia: https://en.wikipedia.org/wiki/NIST-7 You can see the optical bench on top of the electronics rack. The modern books go

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

In message <45f89398-9302-80dc-3b9d-690802c46...@karlquist.com>, "Richard (Rick) Karlquist" write s: >It is surprising that none of the various makers of the 5071A >ever made an optical version. I wonder what they are thinking >now that someone else has done it. Why would they ? They

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

An Early (~1980?) NS/FEI paper on optically pumped cesium beam tubes: http://tf.nist.gov/general/pdf/732.pdf Bruce > > On 18 March 2017 at 17:28 "Richard (Rick) Karlquist" > wrote: > > Len Cutler was all set to build an optically > pumped Cs beam 20 years

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

On Sat, Mar 18, 2017 at 2:48 AM, wrote: > Looks like Oscilloquartz is getting ready to sell this commercially! http://www.chronos.co.uk/files/pdfs/itsf/2015/day2/1410_High_performance_optically-pumped_cesium_beam_clock-PBerthoud-Oscilloquartz.pdf Two year old deck with a fair

Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

Len Cutler was all set to build an optically pumped Cs beam 20 years ago. Even then, he could get the lasers. He was only missing one thing: money. HP management never agreed to fund it. The paper conspicuously omits any spec on absolute accuracy. The optical pumping does nothing to improve

[time-nuts] Optical Cesium or maybe Cesium "light"!

Looks like Oscilloquartz is getting ready to sell this commercially! Will give the 5071A a run for the money! Reliability should go way up as: -No electron multiplier -No ionizer filament -No state selection magnets Also all the fiddley bits (laser diodes and photodetectors) are external to the