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Figure c23/f001
Figure 23.1
Excitation of an atom with (a) spontaneous and (b) stimulated emission of radiation.
Figure c23/f005
Figure 23.5
Absorption spectra of the principle tissue chromophores. Er:Glass, erbium:glass; Er:YAG, erbium:yttrium‐aluminium‐garnet; IPL, intense pulsed light; K...
Figure c23/f009
Figure 23.9
Carbon dioxide laser treatment of vascular ectasia in port‐wine stain (a) before and (b) after treatment.
Figure c23/f013
Figure 23.13
Improvement in plantar warts (a) before and (b) after four pulsed dye laser sessions.
Figure c23/f017
Figure 23.17
Pseudofolliculitis barbae (a) before and (b) after a treatment with a normal mode alexandrite (755 nm) laser. Residual hair is sparse and fine and the...
Figure c23/f021
Figure 23.21
Contouring of rhinophyma (a) before and (b) after treatment with a CO2 laser usually produces excellent cosmetic outcomes.
Figure c23/f002
Figure 23.2
Diagram of a laser showing the external power source, the active medium within the optical cavity and a system of fully and partially reflective mirro...
Figure c23/f006
Figure 23.6
Ulcerated haemangioma (a) before and (b) after two pulsed dye laser treatments.
Figure c23/f010
Figure 23.10
Facial telangiectasia (a) before and (b) after pulsed dye laser treatment.
Figure c23/f014
Figure 23.14
Professional tattoo (a) before and (b) after multiple Q‐switched alexandrite (532 and 1064 nm) laser treatments. Note the hypopigmentation following t...
Figure c23/f018
Figure 23.18
Paradoxical hypertrichosis on the neck seen after long pulsed Nd:YAG laser treatment.
Figure c23/f022
Figure 23.22
Tattoo granulomas (a) before and (b) after CO2 laser ablation; they usually respond well.
Figure c23/f003
Figure 23.3
Simplified representation of the pulse types.
Figure c23/f007
Figure 23.7
Flat and superficial port‐wine stain (a) before and (b) after four pulsed dye laser treatments (595 nm) showing an unusually good response.
Figure c23/f011
Figure 23.11
Facial erythema (a) before and (b) after one treatment with a flashlamp, showing minimal patterning and a near disappearance.
Figure c23/f015
Figure 23.15
Penile lentiginosis (a) before and (b) after Q‐switched alexandrite laser treatment.
Figure c23/f019
Figure 23.19
Angiofibromas (a) before, (b) 6 months after and (c) 24 months after CO2 laser resurfacing, showing a gradual recurrence of lesions over time.
Figure c23/f004
Figure 23.4
Fate of incident light on skin.
Figure c23/f008
Figure 23.8
(a–c) Port‐wine stain intermittently treated with the pulsed dye laser over a period of 12 years showing a relative lack of response in the mid‐face p...
Figure c23/f012
Figure 23.12
Angiokeratoma (a) before and (b) after pulsed dye laser treatment.
Figure c23/f016
Figure 23.16
Naevus of Ota (a) before and (b) after seven treatments with a Q‐switched Nd:YAG (1064 nm) laser, showing a reduction of abnormal pigment and minimal ...
Figure c23/f020
Figure 23.20
Periorbital syringomas in a patient with skin phototype VI (a) before and (b) after 3 months of treatment with a CO2 laser.