Data storage device with spiral write mode hop mitigation

1 . A data storage device, comprising:

one or more disks;

an actuator mechanism configured to position a selected head among one or more heads proximate to a disk surface of a corresponding disk among the one or more disks, the selected head comprising a write element and an assistive energy emitter; and

one or more processing devices, individually or in combination, configured to:

apply a first set of settings to the assistive energy emitter in association with writing a first spiral servo pattern to the disk surface; and

apply a second set of settings to the assistive energy emitter in association with writing a second spiral servo pattern to the disk surface, wherein the second set of settings is different than the first set of settings.

2 . The data storage device of claim 1 , wherein:

the first set of settings comprises a first pre-bias current, a first pre-bias duration, and a first write current; and

the second set of settings comprises a second pre-bias current, a second pre-bias duration, and a second write current.

3 . The data storage device of claim 2 , wherein the first pre-bias current has a different magnitude than the second pre-bias current.

4 . The data storage device of claim 2 , wherein the first pre-bias duration has a different magnitude than the second pre-bias duration.

5 . The data storage device of claim 2 , wherein the first write current has a different magnitude than the second write current.

6 . The data storage device of claim 2 , wherein the one or more processing devices, individually or in combination, are further configured to:

apply the first pre-bias current to the assistive energy emitter for the first pre-bias duration prior to writing the first spiral servo pattern to the disk surface;

apply the first write current to the assistive energy emitter while writing the first spiral servo pattern to the disk surface;

apply the second pre-bias current to the assistive energy emitter for the second pre-bias duration prior to writing the second spiral servo pattern to the disk surface; and

apply the second write current to the assistive energy emitter while writing the second spiral servo pattern to the disk surface.

7 . The data storage device of claim 1 , wherein the one or more processing devices, individually or in combination, are further configured to:

generate a spiral position error signal based on reading the first spiral servo pattern and the second spiral servo pattern; and

control a position of the selected head over the disk surface using the spiral position error signal.

8 . The data storage device of claim 7 , wherein the controlling the position of the selected head over the disk surface using the spiral position error signal comprises controlling cross-track and down-track positions of the selected head over the disk surface by maintaining the selected head along a circumferential track on the disk surface while writing product servo sectors at servo wedge locations in the circumferential track.

9 . The data storage device of claim 1 , wherein the assistive energy emitter comprises a laser diode.

10 . The data storage device of claim 1 , wherein the data storage device comprises a heat-assisted magnetic recording disk drive.

11 . A method comprising:

applying different respective sets of settings to an assistive energy emitter in a head of a disk drive in association with writing respective spiral servo patterns to a disk surface on a disk among one or more disks in the disk drive,

wherein the respective spiral servo patterns are written to the disk surface using an inductive write coil in the head, and

wherein the applying is performed by one or more processing devices individually or in combination.

12 . The method of claim 11 , wherein each of the respective sets of settings comprises a respective pre-bias current, a respective pre-bias duration, and a respective write current.

13 . The method of claim 11 , wherein:

a first one of the respective sets of settings applied in association with writing a first one of the respective spiral servo patterns comprises a first respective pre-bias current; and

a second one of the respective sets of settings applied in association with writing a second one of the respective spiral servo patterns comprises a second respective pre-bias current that differs in magnitude from the first respective pre-bias current.

14 . The method of claim 11 , wherein:

a first one of the respective sets of settings applied in association with writing a first one of the respective spiral servo patterns comprises a first respective pre-bias duration; and

a second one of the respective sets of settings applied in association with writing a second one of the respective spiral servo patterns comprises a second respective pre-bias duration that differs in magnitude from the first respective pre-bias duration.

15 . The method of claim 11 , wherein:

a first one of the respective sets of settings applied in association with writing a first one of the respective spiral servo patterns comprises a first respective write current; and

a second one of the respective sets of settings applied in association with writing a second one of the respective spiral servo patterns comprises a second respective write current that differs in magnitude from the first respective write current.

16 . One or more processing devices, individually or in combination, comprising:

means for applying a first set of settings to an assistive energy emitter in a head of a disk drive in association with writing a first spiral servo pattern to a disk surface; and

means for applying a second set of settings to the assistive energy emitter in association with writing a second spiral servo pattern to the disk surface, wherein the second set of settings is different than the first set of settings.

17 . The one or more processing devices of claim 16 , wherein:

the first set of settings comprises a first pre-bias current, a first pre-bias duration, and a first write current; and

the second set of settings comprises a second pre-bias current, a second pre-bias duration, and a second write current.

18 . The one or more processing devices of claim 17 , wherein the first pre-bias current has a different magnitude than the second pre-bias current.

19 . The one or more processing devices of claim 17 , wherein the first pre-bias duration has a different magnitude than the second pre-bias duration.

20 . The one or more processing devices of claim 17 , wherein the first write current has a different magnitude than the second write current.