Ask a Doctor app on Android
Get your Health question answered in 3 easy steps
Ask a Doctor Now
139 Doctors are Online

topicLogo Laser

A laser is a device that emits light ( electromagnetic radiation ) through a process of optical amplification based on the stimulated emission of photons . The term laser originated as an acronym for Light Amplification by Stimulated Emission of Radiation . The emitted laser light is notable for its high degree of spatial and temporal coherence , unattainable using other technologies. Spatial coherence typically is expressed through the output being a narrow beam which is diffraction-limited , often a so-called pencil beam. Laser beams can be focused to very tiny spots, achieving a very high irradiance . Or they can be launched into a beam of very low divergence in order to concentrate their power at a large distance. Temporal (or longitudinal) coherence implies a polarized wave at a single frequency whose phase is correlated over a relatively large distance (the coherence length ) along the beam. A beam produced by a thermal or other incoherent light source has an instantaneous amplitude and phase which vary randomly with respect to time and position, and thus a very short coherence length. Most so-called single wavelength lasers actually produce radiation in several modes having slightly different frequencies (wavelengths), often not in a single polarization. And although temporal coherence implies monochromaticity, there are even lasers that emit a broad spectrum of light, or emit different wavelengths of light simultaneously. There are some lasers which are not single spatial mode and consequently their light beams diverge more than required by the diffraction limit. However all such devices are classified as lasers based on their method of producing that light: stimulated emission. Lasers are employed in applications where light of the required spatial or temporal coherence could not be produced using simpler technologies.
57 Premium Questions
119 Online Doctor Chat
266 Public Forum Questions

Premium Questions (57)

hi, this is a 34yrs old male, i have taken a full body XXXXXXX diode (soprano accord) laser hair removal package but the doctor is not ready to treat the scrotum area with the laser, but i am looking for a complete body hair free experience, hence...
I have some white spots on my cheeks, and they are NOT Vitiligo, it´s just lighter than the other part, which is the best option to recover the pigment? I visited doctors and they stated I have brown spots and they...
I need the best possible scar treatment.
Im 10 weeks pregnant. Is it safe to use hair removal creams in the genital areas?
I am 29 years old. I used to have Hypothyrodism years ago but I was told 5 years ago its normal now I have gained weight even thought I don't eat much I even had lipo suction for my arms they are still huge thats really not normal
Hi, I have Acne scars on my face.. My doctor has suggestedme to go for a combination of Dermaroller treatment + Subcision for a total of 10 sittings.. Has also suggested me the cure by Laser at a later stage. I am a little skeptical about going...
Been going to the gym 5 times a week since 28th dec 2012 been reducing my calories and have lost 30lb start weight 18 8 now 16.6 Had stretch marks on stomach after 3 children but have become very itchiy & red what...
Hello, I went under laser resurfacing 4 weeks ago. Now my face is very red. Although redness is uneven (i.e. some areas are dark red and other less and turning pink).. my doctor prescribed me locoid for 3 days and...
The hairs of my eyebrows are diminishing in circular shapes.. Have consulted a Dermatologist and used some kind of laser with the help of machine. My hairs came back but not completely. The area is itching sometimes
i had laser back surgery at the laser spine institute in nov and i am in more pain than i was before surgery i had bone spurs cut off and thermnal abulation, and more things does it take the nerves a long time to...
View more

Online Doctor Chat (119) - Laser

Doctor : hi Doctor : how can I help you? User : Herllo Doctor : plz continue User : Iam a patient of pemphigus vulgaris Doctor : ok User : i am taking steroids from last 4.5 yrs User : i am married User : i want to go for a child Doctor...
Answered by
Doctor : hi Doctor : how can i help you? Doctor : are you there? User : Hi sir my friend is in need to remove a tattoo on his shoulder which is very stongly sticked to his skin. Doctor : ok User :Dear Sir,I have come to know about your...
Answered by
User : hi Doctor : Hi User : hello,just wanted to ask you that do scar of pimple get removed by laser treatment Doctor : Yes. User : and how much sittings does it required User : i alredy had 2 sittings Doctor : It depends on the depth of...
Answered by
Doctor : Hi User : hi doc Doctor : How can I help you? User : m 26 yrs old Doctor : Ok User : and i have had stretch marks since early 2007 Doctor : ok User : and also got more in 2009 due to over weight XXXXXXXX short time Doctor :...
Answered by
Doctor : hi Doctor : how can i help you? User : hello User : may i know whom im speaking to? Doctor : Dr.XXX User : i hav a query Doctor : ok User : few days back i went to attend a laser show Doctor : ok User : as im pregnant i want to...
Answered by
View more

Public Forum (266) - Laser

2 Answers
hi, I am wearing power glass. I am 20 years old. shall I go for laser operation if I do that any side effect is there ? plz answer me
2 Answers
i am 35 aged unmarried female. now a days my period extends 4 days to 7 days period for the last 4 months. The blood discharge is firth 2 and half days only. nothing discharged on 4th day. 5,6,7th days light brownish discharged occur. 1. what is the reason? 2. Is it normal for 35 aged female. 3. Is it need medication or any natural way.
1 Answer
hello,i m suffering from piles and fissher from past 2 yrs ...i also get operated once bt after 6-7 month it started paining again and also again a small portion of skin came out .now again i am facing the same problem.i want to ask that is there any way to get relief from it permanently or i have to get operated again??plz suggest me and also i...
2 Answers
i am suffering from pcod since 6 years.now my age is 23.married 3 months ago.my weight is 65kg and height 5.6....last month i visited my doctor . my doctor advised me to take deviry pills for three cycles to get concieve. is this really works .......i am so afraid whether i will concieve or not....i heard that people suffering from pcod have...
Hi Am 16+ And i have Pearly Penile Papules For about a year and 26 Days and am so Worried I search on the internet To know how to Remove Them I read About the Co2 laser Treatment and i read that it is expensive and i did t want to do it cause i donot have No money for that kind ah treatment and i read on the internet that u can use toothpaste to...
1 Answer
hi doctor i m 34 yrs old weight 52kg height 5 feet 1 inch. I work in a company but i feel very weak pls tell me diet to keep ourself fit. when i born my mom got jaundice and i was very weak and i start walking at the age of 4. i also go to gym daily and do exercise. I always feel dizziness and depressed as i dont have baby yet. pls suggest me...
1 Answer
hi, Docter i have many quires like i m a hypothyriod patient and i also have bilateral polycysts sydore in both ovarys my gync precibe me eltroxin for thyriod, riomet od 500mg folinext d,mcbm-69and ton concieve she precibe me siphene-100 and susten 400 from 22 day to 28 day of my LMP date now on 21 day of LMP i m feeling sore breast light...
1 Answer
I am srikanth and i am 23 years old. I want to get rid of my back hair through laser theraphy. can you advice me?
1 Answer
hi..am shilpa(female)doing my masters..i want to go for laser treatment for upperlips n lowerchin.my hair grow is thick,is it safe to go for laser?will there be any side effects?am 25yr old.plzzz suggest me..
1 Answer
i want to ask how much cost i will taken in mumbai has circumsation surgery? ang suggest laser adult circumstation operation hospital?
View more
All the information, content and live chat provided on the site is intended to be for informational purposes only, and not a substitute for professional or medical advice. You should always speak with your doctor before you follow anything that you read on this website. Any health question asked on this site will be visible to the people who browse this site. Hence, the user assumes the responsibility not to divulge any personally identifiable information in the question. Use of this site is subject to our Terms & Conditions
What people are searching on Healthcaremagic
Online Doctor Online Medical Advice Diagnosed with mastocytosis. Blood and urine test done. What should I do next? Pregnant, overweight, have swelling on arm. Doppler ultrasound normal. Any suggestion? Have hardened vein in scrotum. Getting erection and ejaculation problem. Proper diagnosis? Suffering from back pain when bending or lifting. Feeling cold and numbness. No relief from... Got hand jobs on two occasions. Could I have HIV transmission? Had surgery done for pilondilal sinus. Felt lump on butt crack. Worrisome Facing difficulty in achieving or maintaining erection. Looking for an effective cure Baby fell on face, nose bleeding, bump on forehead. Heart rate, oxygen level in blood came... Pain in lower back, fingers. Advise Can a diabetic patient take eglucon tablet? On ventilator. Took ativan for back pain. Suggest safe medication to control anxiety and heart rate 19 year old. Not having facial hair. Is there any solution to grow facial hair? Have severe itching on scrotum. What is causing this and required cure? Woke up with stiff neck, headache, swollen nodes behind ears. Feeling lethargic with low appetite Having mild pain all over body. Is this the cause of concern? Child is having itchy fingernails and cuticles. What could be causing this? Can anxiety cause sinus headache, weird sensations on the back of skull and behind ear? Missing period. Noticed blood in stool. Have high BP and gallstone. Safe remedy? Suffering from adult acne on face, chin, neck and back. Not cured by treatment. Alternative cure? Toddler vaccinated for MMR. Started vomiting and passing loose stool. Are they related? Had rash on the penis. Applied antibiotic cream, wound healed but formed a scar. Suggestions? Wet asthma and sleep apnea. Spitting paste. What are some questions to ask pulmonologist? Prescribed Phenergan for stomach flu. Now vomiting. Should I take Glimepiride along with medication? Flap in nostril, difficulty breathing. Worsening with age. Treatment? Leg injury. Swollen ankle, painful. Swelling reduces when elevating leg. What is wrong? Child has red marks on face, ear pain, raised white bumps, itchy. Allergy? Canker sores in mouth. Sores in inner labia. Blood test negative for STD. Cause? Cyclic vomiting syndrome. CT scan shows mesenteric adenitis. Should I be worried? Painful lump above rectum. Had thrombose hemorrhoid external. Any suggestions? Dyslipidemia and fatty liver. Prescribed Gemfibrozil and Metformin. Right medications? Extremely thirsty, urinate a lot. Could this mean that I have diabetes? Brown spots on back, inner thighs, knees and stomach. What could they be? Leaking mitral valve. Breathlessness, fatigue, irregular heartbeat, arm pain, hoarse. Should I... Pain in upper leg after flying. Unable to walk. Painful Had stroke, left side paralyzed. Regained movement, eating on her own Tongue soreness. Had canker sore. Gum inflammation. Recovering from bronchitis. Any ideas? Discomfort in heart area extending to chest and lower heart. Increased heartrate. Feeling anxious Stomach ache, swollen area above navel. Tenderness after pushing Rectal bleeding. Lump inside stomach. Unable to go to toilet MRI shows tuberculosis in spine. Back pain and swelling. Next step?