SidebandLock

Class Arguments

Argument	Type	Default Value
rf_source	RFSource
reference_frequency	TFloat
sideband_order	TInt32	1
settle_time	TFloat	0
blind	TBool	False
lock_offset	TFloat	0.0
harmonic	TInt32	1

Bold arguments are mandatory. For more documentation on the listed arguments refer to the class definition below. If parameters appear in this list but not in the class definition below, please recursively check the linked base classes for the definition of the parameter.

Inheritance Diagram

Example Component Dictionary

   {
    "lock_example": {
        "classname": "atomiq.components.lock.SidebandLock",
        "arguments": {
            "rf_source": "<mandatory parameter (RFSource)>",
            "reference_frequency": "<mandatory parameter (TFloat)>",
            "sideband_order": 1,
            "settle_time": 0,
            "blind": false,
            "lock_offset": 0.0,
            "harmonic": 1
        }
    }
}

Class Description

class atomiq.components.lock.SidebandLock(rf_source, sideband_order=1, *args, **kwargs)

Bases: DetunableLock

Lock on a sideband modulated onto the laser

This kind of lock is frequently used when locking on tunable sideband to the transmission signal of a stable cavity. The offset frequency for the sideband is generated by an RF source and can be changed at runtime. Thus the lock point can be detuned.

Parameters:

• rf_source (RFSource) -- RF source that determines the sideband frequency.

• sideband_order (TInt32) -- Order of the sideband the laser is locked to [.., -2, -1, 1, 2, ...] (default 1)

A Parametrizable is an entity that can be controlled by one or more continuous parameter(s)

set_detuning(offset_frequency)

Set the frequency relative to the reference frequency, i.e. set the lock offset.

Parameters:

offset_frequency (artiq.compiler.types.TMono('float', OrderedDict())) -- new lock offset in Hz

set_frequency(frequency)

Set the absolute frequency of the locked line

Parameters:

frequency (artiq.compiler.types.TMono('float', OrderedDict())) -- The absoulte frequency at which the system should lock