Clinical Education
500 ps vs 750 ps Picosecond Laser
At equal energy, a 500 ps pulse delivers higher peak power than a 750 ps pulse, because peak power is energy divided by pulse duration — a shorter pulse drives more photoacoustic pigment fragmentation.
Picosecond lasers don't all use the same pulse width. A 500 ps pulse is shorter than 750 ps, so at equal energy it produces higher peak power. This explains why pulse width is part of comparing picosecond platforms.
- Peak power = energy ÷ pulse duration; a shorter pulse yields higher peak power at the same energy.
- Higher peak power increases the photoacoustic (pressure) effect that fragments pigment.
- Pulse width is one factor — wavelength, delivered energy, and spot size also matter.
- The Pro 1 Pico delivers a true 500 ps pulse at 1064 nm.
Pulse width is part of the spec
Not all picosecond lasers use the same pulse duration. A common comparison is a 500 ps pulse versus a 750 ps pulse. The difference looks small, but it changes the figure that drives pigment fragmentation: peak power.
Peak power is energy ÷ pulse duration
Peak power is the instantaneous power delivered during the pulse — calculated as energy divided by pulse duration. At the same energy, a shorter pulse produces higher peak power:
- A 500 ps pulse delivers roughly 1.5× the peak power of a 750 ps pulse at equal energy (750 ÷ 500 = 1.5).
Higher peak power increases the photoacoustic effect — the rapid pressure that shatters pigment into finer particles — which is the physical basis for efficient picosecond clearance. (For the broader picosecond-vs-nanosecond comparison, see Picosecond vs Q-Switched Laser.)
Pulse width is one factor, not the whole story
A shorter pulse helps, but real performance also depends on the delivered energy, the wavelength, and the spot size. A platform that pairs a short pulse with high energy and a 1064 nm primary wavelength turns the peak-power advantage into usable clinical range. A shorter pulse improves the odds of efficient clearance; it does not guarantee a fixed number of sessions.
Where the Pro 1 Pico sits
The Pro 1 Pico delivers a true 500 ps pulse at 1064 nm, with PTP dual-pulse energy headroom up to 1600 mJ — so the peak-power advantage is backed by delivered energy and a deep-penetrating wavelength. For the full purchasing checklist, see the Picosecond Laser Buying Guide, or the product-specific Pro 1 Pico Buying Guide.
This is an educational overview; clinical suitability and results vary by patient, device, and provider.
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FAQs
Is a 500 ps pulse better than a 750 ps pulse?
At the same energy, a 500 ps pulse delivers higher peak power because peak power is energy divided by pulse duration. Higher peak power increases the photoacoustic effect that fragments pigment. Pulse width is one important factor among wavelength, delivered energy, and spot size.
How much higher is the peak power at 500 ps vs 750 ps?
All else equal, peak power scales inversely with pulse duration, so a 500 ps pulse delivers roughly 1.5× the peak power of a 750 ps pulse at the same energy (750 ÷ 500 = 1.5). The real clinical effect also depends on the actual energy delivered and the wavelength.
Does a shorter pulse guarantee fewer sessions?
No. A shorter pulse improves the peak-power physics, but session counts still depend on ink type, depth, colour, skin type, and provider settings. It improves the odds, not a fixed outcome.
What pulse width does the Pro 1 Pico use?
The Pro 1 Pico delivers a true 500 ps pulse at 1064 nm, with PTP dual-pulse energy headroom up to 1600 mJ for additional flexibility.