Many laser operators are not sure what is meant by energy density or fluence. They should know this as it is fundamental to generating good clinical outcomes. Here’s a video I made explaining how to calculate ED/fluence… You can download a pdf copy of the above here. Hope this clears this topic… Continue reading What is ‘energy density’ or ‘fluence’?
Author: Mike Murphy
I started in medical lasers in 1986! I have been involved in clinical research, medical laser and IPL development, sales and marketing across Europe and South East Asia, business start-ups, theoretical research into laser-tissue interactions, training course development, writing articles for peer-reviewed journals and industry magazines. I am currently the Chairman of the Association of Laser Safety Professionals.
Experiments with India ink and a Q-switched Nd:YAG laser
What happens when India ink absorbs laser energy? I irradiated some dry India ink trapped between two glass slides here (the ink was allowed to dry overnight). I used 5 J/cm^2 with a 1064 nm wavelength. As you can see, the laser energy ‘vapourises’ the ink and leaves voids behind. But, very little ink leaves… Continue reading Experiments with India ink and a Q-switched Nd:YAG laser
Spreading the coronavirus through simple speech…
We spit when we speak! Gross!!!! But we do. We can’t help it. It’s perfectly natural but we cannot see those tiny droplets of saliva in the air – usually. But, if you have a nice, big, powerful, visible laser, then you can see the spit, in flight! Some scientists did exactly this. The video… Continue reading Spreading the coronavirus through simple speech…
UK Gov’t advice on re-opening your clinic – “Keeping workers and clients safe during COVID-10 in ‘close contact’ services.”
The UK Government has released a document which should help those of you planning to re-open your clinic soon. It is aimed specifically at hairdressers, beauty centres, tattoo shops etc, and all those places where ‘close contact’ with clients is necessary. Personally, I think it’s a bit ‘lightweight’ on the issue of clean air –… Continue reading UK Gov’t advice on re-opening your clinic – “Keeping workers and clients safe during COVID-10 in ‘close contact’ services.”
COVID-19 Risk Analysis for Aesthetic Centres
Lynton Lasers (UK) have produced a very useful Covid-19 Risk Analysis document for laser/IPL clinics and centres. You can download a copy above. Mike.
The virus is in the air…
Research from around the world clearly shows that the coronavirus sits on saliva droplets in the air for hours. This is not widely understood. Even The WHO have only recently begun to ‘get’ this!! I put together a video to explain the physics behind this – its not rocket science!!! Watch here – You can… Continue reading The virus is in the air…
From the very, very small to the very, very big….
I found a great video showing ‘The Scale of the Universe’… Ciao, Mike.
Calibrating your laser – making sense of the numbers…
How do you calibrate your lasers so that the numbers on your laser screen actually mean something useful? Well, there is a process which you need to follow. The video shows this process in detail. So, you need to measure the laser energy for each of your ‘input’ settings using an energy meter designed for… Continue reading Calibrating your laser – making sense of the numbers…
Laser/IPL Hair Removal – plume and precautions!!!
I wrote an article for Aesthetics recently regarding the plume generated by laser/IPL hair removal and other treatments. All ablative treatments will generate a plume. In addition, many other laser/IPL treatment will also generate plume. What is a ‘plume’? Plume consists of smoke particles and tiny, invisible particles of tissue, hair, bacteria, viruses and potentially… Continue reading Laser/IPL Hair Removal – plume and precautions!!!
Back-scattered light from the skin is much more than we think…
My Letter describing back-scattered laser radiation from the skin has been published in the ‘open market’ by Springer! I’m very pleased that they have done this. However, I am now thinking that the levels of back-scattered light are higher than I first thought. The is coming from new work I have been doing looking at… Continue reading Back-scattered light from the skin is much more than we think…
Mike Murphy's Blog 