Raw results

28 October 2016

Response time of AOM testing. For more information.

31 October 2016

RBW is 5 MHz, VBW 5 MHz

RBW, [MHz]	VBW, [MHz]	MBR side pwr, [mW]	Toptica side pwr, [mW]	Pulse duration, [us]	Pulse period, [us]
5	5			5	5

31 of October. Pulsed 4WM with the same pumps duration 5 microseconds and period 5 microseconds. This is one shot picture. Sweep time 50us.

31 of October. Pulsed 4WM with the same pumps duration 5 microseconds and period 5 microseconds. This is averaged over many trials. Sweep time 100us.

31 of October. Pulsed 4WM with the same pumps duration 5 microseconds and period 5 microseconds. This is one shot picture. Sweep time 50us.

 

 

1st of November 2016

Measurement conditions.

RBW, [MHz]	VBW, [MHz]	MBR side pwr, [mW]	Toptica side pwr, [mW]	Pulse duration, [us]	Pulse period, [us]
5	5	0.8	13	5	5

 

We first measured 4WM signal dependence on a seed (Toptica pump entering the fiber). We see the logarithmic increase until saturation, which happens at 10-20 uW. 

File:4WM seed pwr dep1.pdf

1st of November.

File:4WM seed pwr dep2.pdf

1st of November.

1st of November. DLCZ period 20 microseconds, delay between pumps is 150 ns.

4th November 2016

We measured in a pulsed regime dependence of 4WM signal on a side pump MBR. RBW = VBW = 5MHz. Sweep time 50 us. Pulses were 5us long and spaced with 5us. The maximum signal we achieved was ~7mV. Problems:

• When we look at the signal after locking the cavity it is maximum and then decreases.
• As well sometimes there is a modulation on top of the signals.
• Cavity lock is unstable in the pulsed regime: breaks the lock after 3 minutes.

File:4WM MBR side pwr linear nov4.pdf

4th of November.

File:4WM MBR side pwr log10 nov4.pdf

4th of November.