def photon_counter_channels(): ''' `p7888_start_trigger` tells the photon counting card to start listening for photon counts. I believe listens for data for less than 1 ms. `p7888_flushing_trigger` feeds into one of the listening ports on the photon counting card. It's so we can send fake photons and fill up the memory of the card so it updates on the PC. `photon_counter_shutter` controls the shutter before the photon_counter photodiode. It's to for prevent damage to the photodiode. ''' DigitalOut( name = 'p7888_start_trigger', parent_device = ni_pci_6284_dev6, connection = 'port0/line11' ) DigitalOut( name = 'p7888_flushing_trigger', parent_device = ni_pci_6284_dev6, connection = 'port0/line15' ) DigitalOut( name = 'photon_counter_shutter', parent_device = ni_pci_6284_dev6, connection = 'port0/line13', inverted = True )
def red_laser_channels(): ''' ## Intensity Controls `red_cavity_power` Controls the trap light power going into the cavity axis via error offset into a (PI) power lockbox. This RF signal is switched via `red_cavity_power_switch`. `red_cavity_power_switch` has some crosstalk with Channel 8 on Dev 6. `red_transverse_power` Controls the light power for the transverse trapping beam, which is oriented along the y-axis (lab frame). ''' AnalogOut( name = 'red_cavity_power', parent_device = ni_pci_6723_dev3, connection = 'ao0', limits = None ) AnalogOut( name = 'red_transverse_power', parent_device = ni_pci_6723_dev3, connection = 'ao5' ) DigitalOut( name = 'red_cavity_power_switch', parent_device = ni_pci_6284_dev6, connection = 'port0/line9' )
def blue_laser_channels(): ''' ###`blue_mot_power` This controls the power to our 399nm laser. It currently needs no distinction, as we only have one blue laser beam path: the MOT beampath. ###`blue_mot_shutter` This controls the shutter for the MOT beampath. ###`imaging_power_switch` Controls the RF switch for the 399nm Imaging Light beampath. ###`imaging_power_shutter` Controls the shutter for the 399nm Imaging Light beampath. ''' AnalogOut( name = 'blue_mot_power', parent_device = ni_pci_6713_dev4, connection = 'ao0', limits = None ) DigitalOut( name = 'blue_mot_shutter', parent_device = ni_pci_6284_dev6, connection = 'port0/line1' ) DigitalOut( name = 'imaging_power_switch', parent_device = ni_pci_6284_dev6, connection = 'port0/line6' ) DigitalOut( name = 'imaging_power_shutter', parent_device = ni_pci_6284_dev6, connection = 'port0/line7' )
def __init__(self,name,parent_device,com_port='COM1',FMSignal=None,RFOnOff=None,freq_limits = None,freq_conv_class = None,freq_conv_params = {},amp_limits=None,amp_conv_class = None,amp_conv_params = {},phase_limits=None,phase_conv_class = None,phase_conv_params = {}):
#self.clock_type = parent_device.clock_type # Don't see that this is needed anymore
IntermediateDevice.__init__(self,name,parent_device)
self.BLACS_connection = com_port
self.sweep_dt = 2e-6
self.RFSettings = {
'freq': 0,
'amp': 0,
'phase': 0,
'freq_dev':0 ##EE
}
self.sweep_params = {
# 'type': None,
'low': 0,
'high': 1,
'duration': 0,
# 'falltime': 0,
'sample_rate': self.sweep_dt
}
self.sweep = False
self.ext_in = False
self.frequency = StaticAnalogQuantity(self.name+'_freq',self,'freq',freq_limits,freq_conv_class,freq_conv_params)
self.amplitude = StaticAnalogQuantity(self.name+'_amp',self,'amp',amp_limits,amp_conv_class,amp_conv_params)
self.phase = StaticAnalogQuantity(self.name+'_phase',self,'phase',phase_limits,phase_conv_class,phase_conv_params)
self.FMSignal = {}
self.RFOnOff = {}
if FMSignal:
if 'device' in FMSignal and 'connection' in FMSignal:
self.FMSignal = AnalogOut(self.name+'_FMSignal', FMSignal['device'], FMSignal['connection'])
else:
raise LabscriptError('You must specify the "device" and "connection" for the analog output FMSignal of '+self.name)
else:
raise LabscriptError('Expected analog output for "FMSignal" control')
if RFOnOff:
if 'device' in RFOnOff and 'connection' in RFOnOff:
self.RFOnOff = DigitalOut(self.name+'_RFOnOff', RFOnOff['device'], RFOnOff['connection'])
else:
raise LabscriptError('You must specify the "device" and "connection" for the digital output RFOnOff of '+self.name)
else:
raise LabscriptError('Expected digital output for "RFOnOff" control')
def green_laser_channels():
'''
Control the power and shutters of the various green beams as well as the frequency.
##Beampaths
Polarizations are defined with respect to the magnetic field bias. This is currently pointing up.
### Probe Beampath
This is beampath for the light going into the cavity **for measurement**.
It's \\(\\sigma+\\) polarized.
#### Probe Sideband
The Probe carrier frequency is actually a little far off from the atom+cavity
resonance. The Probe Sideband is what actually interacts with the
atoms+cavity. One can say the 'Probe Sideband' is the actual probing beam.
Unfortunately, 'Probe' is more of a name for the ultimate use of the beam path
rather than it's initial spectral content.
This makes things confusing. We can try and help by saying that the naming
convention in the lab is labeled by its final state. This makes it difficult
to understand its evolution through the system but that's the way things are.
#### Two Color Probe Sidebands (of the Probe Sideband)
We have a **phase** measurement technique where we center the probe sideband
frequency at the center of the atom + cavity resonances, then we apply
modulation \\(f_m\\) to split this sideband in two. This allows us to drive
two colors of light into the two modes of the atom + cavity system. Since
these two beams share the same spatial mode, they interfere at the
photodetector giving us a signal that, at least somewhat, looks like
\\(\\cos(f_m t + \\phi) \\) where \\(\\phi\\) is the phase shift imparted by
one of the atom + cavity transmission peaks.
### Pump Beampath
This goes into the cavity axis. It's used polarizing the atoms in the up
state. It's \\(\\sigma+\\) polarized.
### Cooling Beampath
This is greenlight coming perpendicular to the cavity axis. It's \\(\\pi\\) polarized.
### Green MOT Beampath
It has a complicated beam path. Green comes in from all directions.
.. figure:: ./imgs/mot_path.png
##Analog Intensity Controls
###`probe_sideband_power`
This controls the **sideband light** power via Mixer + Amplifier into an **EOM**.
###`two_color_probe_sideband_power`
The probe sideband is split in two via EOM modulation. See the above section. **We think** that
this controls the modulation strength and thus the ratio of the probe
sideband and these two color sidebands, but are not sure.
###`probe_power_lock_error_offset`
This controls an error offset to the `probe_sideband_power` lock. Typically, this
constant across a whole experimental run.
###`pump_power`
This controls the power via Mixer + Amplifier into an **AOM**.
###`cooling_pi_power`
Currently not connected.
###`cooling_sigma_plus_power`
Controls the power of the \\(\\sigma +\\) light feeding into the cavity axis
for cooling purposes via **EOM**.
###`green_mot_power`
Controls the power of the Green MOT via **AOM**.
##Digital Intensity Controls
All the channels in this section turn off all the RF power to the AOM/EOM via an RF switch.
###`green_mot_power_switch`
Controlled via MOT AOM.
###`probe_power_switch`
Controlled via AOM.
###`probe_sideband_power_switch`
Controlled via EOM.
###`pump_power_switch`
Controlled via AOM.
###`cooling_pi_power_switch`
Controlled via AOM.
###`probe_sideband_cooling_rf_switch`
Is the TTL for an RF switch for changing the frequency fed into the eom
for the probe/cooling path.
##Shutter Controls
Aren't these just intensity controls? Yes, but they block the light better
than turning off the EOM/AOM can. So a shutter helps ensure the light is
really off. Ofcourse, they are slower so they are used in conjunction with an
AOM/EOM RF control.
###`green_mot_shutter`
###`cooling_pi_shutter`
###`probe_shutter`
Located almost just before entering the cavity mirror. It's beneath the
optics table.
###`probe_sideband_cooling_shutters`
This output actually controls two shutters. For `go_high`, the cooling path
is open. For `go_low`, the probe sideband path is open.
## Frequency Control
###`probe_sideband_frequency`
Controls the frequency of the EOM modulation, thus letting us control the
detuning from the atom + cavity system.
###`two_color_chirp`
Triggers the SRS to begin the frequency sweep for the phase measurement.
###`cooling_sideband_frequency` (SRS FM input)
An analog input feeding into an SRS to control the Frequency Modulation.
Thus, it's effectively a VCO.
This VCO is driving the same EOM as the `probe_sideband_frequency` channel
controls. We need a TTL to switch between the probe and cooling
settings. One for the shutter, and one for the RF switch.
## FPGA Trigger
There is an FPGA (Opal Kelly) that controls the frequencies of a Double Pass
AOM early in the beampath. So it controls all the frequencies of all the
beampaths. This FPGA controls the PTS synthesizer on top of the canopy of the lab.
The frequencies are defined in an external program "FrontPanel.exe". There's
a short cut to it on the desktop.
'''
#
# Intensity Controls
#
AnalogOut(
name = 'probe_sideband_power',
parent_device = ni_pci_6713_dev5,
connection = 'ao0'
)
AnalogOut(
name = 'probe_power_lock_error_offset',
parent_device = ni_pci_6713_dev5,
connection = 'ao5'
)
DigitalOut(
name = 'probe_sideband_power_switch',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line23'
)
DigitalOut(
name = 'probe_power_switch',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line10',
inverted = True
)
AnalogOut(
name = 'two_color_probe_sideband_power',
parent_device = ni_pci_6713_dev5,
connection = 'ao1'
)
DigitalOut(
name = 'probe_shutter',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line12'
)
AnalogOut(
name = 'pump_power',
parent_device = ni_pci_6713_dev5,
connection = 'ao7',
)
DigitalOut(
name = 'pump_power_switch',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line8'
)
AnalogOut(
name = 'cooling_pi_power',
parent_device = ni_pci_6713_dev5,
connection = 'ao6',
)
DigitalOut(
name = 'cooling_pi_power_switch',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line24'
)
AnalogOut(
name = 'cooling_sigma_plus_power',
parent_device = ni_pci_6723_dev3,
connection = 'ao4'
)
AnalogOut(
name = 'green_mot_power',
parent_device = ni_pci_6713_dev4,
connection = 'ao4',
limits = None
)
DigitalOut(
name = 'green_mot_power_switch',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line2'
)
DigitalOut(
name = 'probe_sideband_cooling_rf_switch', #Old name: ProbeEOMPowerSelect (0=VCO 1=SRS)
parent_device = ni_pci_6284_dev6,
connection = 'port0/line29'
)
#
# Shutters
#
DigitalOut(
name = 'cooling_pi_shutter',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line25'
)
DigitalOut(
name = 'green_mot_shutter',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line4'
)
DigitalOut(
name = 'green_frequency_fpga_trigger',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line3'
)
DigitalOut(
name = 'probe_sideband_cooling_shutters',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line16'
)
#
# Frequency Controls
#
AnalogOut(
name = 'probe_sideband_frequency',
parent_device = ni_pci_6713_dev4,
connection = 'ao6',
unit_conversion_class = GreenFrequencyVCOCalibration,
unit_conversion_parameters = {
'raw_voltage' : vco_raw_voltage_data,
'raw_frequency' : vco_raw_frequency_data
}
)
AnalogOut(
name = 'cooling_sideband_frequency',
parent_device = ni_pci_6723_dev3,
connection = 'ao2'
)
DigitalOut(
name = 'two_color_chirp',
parent_device = ni_pci_6284_dev6,
connection = 'port0/line5'
)
)
# same as above, but we are changing some parameters used in the conversion and
# specifying a prefix to be used with units. You can now program in mA, uA, mGauss,
# uGauss
AnalogOut(
name="analog1",
parent_device=ni_card_1,
connection="ao1",
unit_conversion_class=example1,
unit_conversion_parameters={"a": 5, "b": 1, "magnitudes": ["m", "u"]},
)
AnalogOut(name="analog2", parent_device=ni_card_0, connection="ao2")
AnalogOut(name="analog3", parent_device=ni_card_0, connection="ao3")
AnalogIn(name="input1", parent_device=ni_card_0, connection="ai0")
DigitalOut(name="do0", parent_device=ni_card_0, connection="port0/line2")
Shutter(
name="shutter1", parent_device=ni_card_0, connection="port0/line1", delay=(0, 0)
)
Shutter(
name="shutter2",
parent_device=pulseblaster_0.direct_outputs,
connection="flag 2",
delay=(0, 0),
)
DigitalOut(
name="switch", parent_device=pulseblaster_0.direct_outputs, connection="flag 4"
)
DDS(name="dds1", parent_device=novatechdds9m_0, connection="channel 0")
DDS(name="dds2", parent_device=novatechdds9m_0, connection="channel 1")
# Use a virtual, or 'dummy', device for the psuedoclock
DummyPseudoclock(name='pseudoclock')
# An output of this DummyPseudoclock is its 'clockline' attribute, which we use
# to trigger children devices
DummyIntermediateDevice(name='intermediate_device',
parent_device=pseudoclock.clockline)
# Create an AnalogOut child of the DummyIntermediateDevice
AnalogOut(name='analog_out',
parent_device=intermediate_device,
connection='ao0')
# Create a DigitalOut child of the DummyIntermediateDevice
DigitalOut(name='digital_out',
parent_device=intermediate_device,
connection='port0/line0')
# Begin issuing labscript primitives
# A timing variable t is used for convenience
# start() elicits the commencement of the shot
t = 0
add_time_marker(t, "Start", verbose=True)
start()
# Wait for 1 second with all devices in their default state
t += 1
# Change the state of digital_out, and denote this using a time marker
add_time_marker(t, "Toggle digital_out (high)", verbose=True)
digital_out.go_high(t)