LaserAgilent8164B

class LaserAgilent8164B(gpib_num=None, gpib_dev_num=None, power_unit='W', output_mode='high')

Bases: agilentlightwave._agilent_lightwave_connection.AgilentLightwaveConnection, agilentlightwave._laser.LaserTunable

Controls the laser module in the Agilent 8164B.

Parameters:

• gpib_num (int) – The GPIB bus number the laser is on.
• gpib_dev_num (int) – The device number the laser in on the bus.
• power_unit (str) – Either ‘W’ or ‘dBm’ depending on what units the Agilent 8164B should use for the laser power.
• output_mode (str) – ‘HIGH’ -> The High Power output is regulated. ‘LOWS’ -> The Low SSE output is regulated. ‘BHR’ -> Both outputs are active but only the High Power output is Regulated. ‘BLR’ -> Both outputs are active but only the Low SSE output is Regulated.

Methods Summary

dbm_to_watts(power_dbm)	Converts [dBm] to [W].
get_on_or_off()	Checks if the laser is on or off.
get_power_W()	Gets the power of the laser in [W].
get_power_dbm()
get_power_mW()
get_power_nW()
get_power_pW()
get_power_uW()
get_unit()	Gets the units the laser is operating in.
get_velocity_nm_s()
get_wavelength_m()	Gets the wavelength in [m] of the laser.
get_wavelength_mm()
get_wavelength_nm()
get_wavelength_power_scan_manual(…[, …])	Performs a wavelength sweep.
get_wavelength_um()
last_operation_completed()
set_power_W(power_W)	Sets the power of the laser in [W].
set_power_dbm(power_dbm)
set_power_mW(power_mW)
set_power_uW(power_uW)
set_unit(unit)	Sets the units the laser should operate in.
set_velocity_nm_s(sweep_speed_nm_per_sec)
set_wavelength_m(wavelength_m)	Sets the wavelength in [m] of the laser.
set_wavelength_nm(wavelength)
set_wavelength_um(wavelength)
turn_off()	Turns the laser off.
turn_on()	Turns the laser on.
wait_for_last_operation_completed()
watts_to_dbm(power_W)	Converts [W] to [dBm].
wavelength_sweep(start_wavelength_nm, …[, …])
wavelength_sweep_interp(start_wavelength_nm, …)
wavelength_sweep_manual_interp(…[, …])

Methods Documentation

static dbm_to_watts(power_dbm)

Converts [dBm] to [W].

Parameters:power_dbm (int, float) – Power in [dBm]. Returns:Power in [W]. Return type:float

get_on_or_off()

Checks if the laser is on or off.

Returns:True if the laser is off, False if the laser is on. Return type:bool

get_power_W()

Gets the power of the laser in [W].

Returns:The power of the laser in [W]. Return type:float

get_power_dbm()

get_power_mW()

get_power_nW()

get_power_pW()

get_power_uW()

get_unit()

Gets the units the laser is operating in.

The units affect in what units the laser power is displayed on the screen.

Returns:The units the laser is oeprating in. Return type:str

get_velocity_nm_s()

get_wavelength_m()

Gets the wavelength in [m] of the laser.

Returns:The wavelength in metres the laser is set to. Return type:float

get_wavelength_mm()

get_wavelength_nm()

get_wavelength_power_scan_manual(start_wavelength_nm, stop_wavelength_nm, step_wavelength_nm, power_meters=None, delay_wavelength_changes_s=1.0, filename=None)

Performs a wavelength sweep.

Manually changes the laser power and the measures. Does not use the in-built sweep function like Thach’s sweep does.

Parameters:

• start_wavelength_nm (int, float) – The minimum wavelength value to start the sweep.
• stop_wavelength_nm (int, float) – The maximum wavelength value to stop the sweep.
• step_wavelength_nm (int, float) – The wavelength stepsize.
• power_meters (PowerMeter,list,None) – The constructed power meter object that should be read as the wavelength is swept. If a list of PowerMeter is given, all power meters in the list will be read. None if no power meter should be read.
• power_meter_units (str) – ‘W’ if the power should be read and returned in Watts, or ‘dBm’ if the power should be read and returned in ‘dBm’.
• delay_wavelength_changes_s (int, float) – The delay in seconds between laser wavelength changes.
• filename (None,str) – The name of the file to save the wavelength and power data to. The data is not saved to a file if None.

Returns:

The first item is a float list of the wavelengths swept. Subsequent

items in the list are power meter readings given in the same order as in power_meters.

Return type:

list

get_wavelength_um()

last_operation_completed()

set_power_W(power_W)

Sets the power of the laser in [W].

Parameters:power_W (int, float) – power in [W] to set the laser to. Returns:The power of the laser. Return type:float

set_power_dbm(power_dbm)

set_power_mW(power_mW)

set_power_uW(power_uW)

set_unit(unit)

Sets the units the laser should operate in.

This will affect in what units the laser power is displayed on the screen.

Parameters:unit (str) – Either ‘dBm’ or ‘W’. Returns:The units the laser is oeprating in. Return type:str

set_velocity_nm_s(sweep_speed_nm_per_sec)

set_wavelength_m(wavelength_m)

Sets the wavelength in [m] of the laser.

Parameters:wavelength_m (int, float) – The wavelength in metres to set the laser to. Returns:The wavelength in metres the laser was set to. Return type:float

set_wavelength_nm(wavelength)

set_wavelength_um(wavelength)

turn_off()

Turns the laser off.

Returns:

True if the laser is off, False if the laser is on.

(Should be False.)

Return type:bool

turn_on()

Turns the laser on.

Returns:

True if the laser is on, False if the laser is off.

(Should be True.)

Return type:bool

wait_for_last_operation_completed()

static watts_to_dbm(power_W)

Converts [W] to [dBm].

Parameters:power_W (int, float) – Power in [W]. Returns:Power in [dBm]. Return type:float

wavelength_sweep(start_wavelength_nm, stop_wavelength_nm, step_wavelength_nm, max_power_mW, sweep_speed_nm_per_sec=5.0, power_metre_slot=1, int_time_ms=20.0, filename=None, preserve_settings=True)

wavelength_sweep_interp(start_wavelength_nm, stop_wavelength_nm, step_wavelength_nm, max_power_W, sweep_speed_nm_per_sec=5.0, filename=None)

wavelength_sweep_manual_interp(start_wavelength_nm, stop_wavelength_nm, step_wavelength_nm, power_meters, delay_wavelength_changes_s=1.0, filename=None)