Burn marks post fraxel? (Photo)

This is a burn likely from excessive heating in the area.  My suggestion is to use bioshield with aquaphor for 7-10 days.  Keep the area moist and sunprotected, it will heal fine.  The nose heals very well without scarring or pigment change the majority of the time.  I suggest seeing your physician if you are worried.  Best, Dr. Emer.

Fraxel lasers and chemical peels can cause unwanted discloration and pigmentation if not performed conservatively. 
After melasma laser or chemical peels; the following protocol is advised:
Elevase Moisture Booster: Twice daily application of Elevase Moisture Booster to help hydrate chapped, sensitized, and dry skin after treatment. Apply liberally on the treated area and reapply if you are experiencing persistent dryness.Melarase AM + Melarase PM: Once the skin has healed over and the peeled, apply Melarase AM in the morning and Melarase PM in the evening to help reduce abnormal pigmentation or PIH. Melarase creams can help maintain a smooth complexion and should be used for at least several months (Note: one bottle contains one month supply).Best, 
Dr. Karamanoukian
Realself100 Surgeon

I would definitely contact my doctor and see what they feel you should do. It is common to be red after fraxel, but you should not be burnt

Yes, of course, this mark will subside.  Possibly it will be gone within a few days to a week.  I would not worry about this.  good luck!

This is a burn from
most likely too much energy being delivered to that area of the skin. I would
immediately suggest that you contact your physician and get in there to let
him/her see this and to determine a proper treatment plan so that you avoid a
scar in that area. There are some wound dressings that work well here and there
are several creams that can be used to help heal the area faster than leaving
it alone.



We recommend that
all of these procedures be performed by a board-certified dermatologist or
plastic surgeon and that the post-operative care be meticulously spelled out
and followed and if there are any concerns that the physician evaluate the
patient and recommend the proper treatments to avoid later complications.

This is caused by bulk heating. Too much treatment in a small area without allowing the skin to cool between passes. I would put Biafene on it to help improve. Then scar recovery gel from Skinmedica when closed. I can't tell you how the ultimate result will end up but probably not too bad. The problem is more related to technique than settings because you only have a burn in one area. 

Fraxel laser is a fabulous laser for treating sun damage and acne scars.  If you are red the following morning and are concerned  I would contact my treating physician.  Redness for the first two days is expected but if you are concerned that you are burnt I would return immediately for a consultation.  Please consult a board certified dermatologist with experience with Fraxel and lasers for the best cosmetic results.