Re: [time-nuts] a newbie question: where can I purchase 794.7 nm VCSEL for building CPT rubidium clock?

2018-06-11 Thread Magnus Danielson
On 06/11/2018 09:52 AM, Attila Kinali wrote: > On Sat, 9 Jun 2018 23:28:29 +0800 > mimitech mimitech wrote: > >> Just do a little bit research on 1560nm telecom laser transceiver. The >> closest wavelength is 1560.61nm (DWDM channel 21) as defined by ITU. >> Usually telecom laser transceiver m

Re: [time-nuts] a newbie question: where can I purchase 794.7 nm VCSEL for building CPT rubidium clock?

2018-06-11 Thread Attila Kinali
On Sat, 9 Jun 2018 23:28:29 +0800 mimitech mimitech wrote: > Just do a little bit research on 1560nm telecom laser transceiver. The > closest wavelength is 1560.61nm (DWDM channel 21) as defined by ITU. > Usually telecom laser transceiver module uses DFB (distributed feedback) > type laser diode

Re: [time-nuts] a newbie question: where can I purchase 794.7 nm VCSEL for building CPT rubidium clock?

2018-06-09 Thread mimitech mimitech
Just do a little bit research on 1560nm telecom laser transceiver. The closest wavelength is 1560.61nm (DWDM channel 21) as defined by ITU. Usually telecom laser transceiver module uses DFB (distributed feedback) type laser diode instead of VCSEL laser. However, the DFB LD should be capable of dire

Re: [time-nuts] a newbie question: where can I purchase 794.7 nm VCSEL for building CPT rubidium clock?

2018-06-09 Thread mimitech mimitech
Thanks, Henk. This is a very interesting paper. The 1560nm VCSEL is indeed very easy to source thanks to widely application in Telecom, but the frequency double and stabilization scheme in the paper is very complex. the purpose of this paper to use 1560nm is because of its higher spectral purity t

Re: [time-nuts] a newbie question: where can I purchase 794.7 nm VCSEL for building CPT rubidium clock?

2018-06-05 Thread Attila Kinali
On Mon, 4 Jun 2018 21:31:56 +0800 mimitech mimitech wrote: > I'm planning to build a CPT (coherent-population-trapping) rubidium clock > as my next hobby project. The main purpose is to learn the principles > behind CPT rubidium clock, and hopefully got similar or better performance > than commer

[time-nuts] a newbie question: where can I purchase 794.7 nm VCSEL for building CPT rubidium clock?

2018-06-04 Thread mimitech mimitech
Hi, list member I'm planning to build a CPT (coherent-population-trapping) rubidium clock as my next hobby project. The main purpose is to learn the principles behind CPT rubidium clock, and hopefully got similar or better performance than commercial miniature rubidium clock such as FE-5680A. To