Laser Diodes Treatment in Delhi

Laser diodes Treatment in Delhi

Laser Diodes Treatment in Delhi, Laser diodes assume a critical part in our regular day to day existences. They are exceptionally shabby and little.

Laser diodes are the littlest of all the known lasers. Their size is a small amount of a millimeter.

Laser diodes are otherwise called semiconductor lasers, intersection lasers, intersection diode lasers or infusion lasers. Before going into laser diodes, let us first take a gander at diode itself.

The light outflow of a semiconductor laser:

A semiconductor laser (LD) is a gadget that causes laser swaying by streaming an electric current to a semiconductor.

The system of light outflow is the same as a light-producing diode (LED). Light is created by streaming the forward current to a p-n intersection.

In forward inclination activity, the p-type layer is associated with the positive terminal and the n-type layer is associated with the negative terminal, electrons enter from the n-type layer and gaps from the p-type layer.

At the point when the two meet at the intersection, an electron drops into an opening and light is discharged at the time.

The essential structure of semiconductor lasers

The essential structure of a semiconductor laser has appeared in Figure 1. The dynamic layer (light discharge layer) sandwiched between the p-and n-type clad layers (twofold heterostructure) is framed on an n-type substrate, and voltage is connected over the p-n intersection from the anodes.

The two edges of the dynamic layer have reflected like surface. When the forward voltage is connected, electrons combined with gaps at the p-n intersection and emits the light.

This light isn’t a laser yet; it is bound to the dynamic layer on the grounds that the refractive record of the clad layers is lower than that of the dynamic layer.

What’s more, the two finishes of the dynamic layer go about as a reflecting mirror where the light responds in the dynamic layer.

At that point, the light is intensified by the fortified emanation process and laser swaying is created.

What is a Laser Diode:

A Laser Diode is a semiconductor device similar to a light-emitting diode (LED). It uses p-n junction to emit coherent light in which all the waves are at the same frequency and phase.

This coherent light is produced by the laser diode using a process termed as “Light Amplification by Stimulated Emission of Radiation”, which is abbreviated as the LASER.

And since a p-n junction is used to produce laser light, this device is named as a laser diode. Before we learn more about the working process of a laser diode, let’s look at how laser light is different from other types of light, and its advantages.

The light from sunlight or from most of the artificial light sources contains waves of multiple wavelengths and they are out of phase with each other.

The light waves from monochromatic light sources like incandescent bulb also are not in phase with each other.

In contrast to the previous light sources, laser diodes produce a narrow beam of laser light in which all the light waves have similar wavelengths and they travel together with their peaks lined up. This is why laser beams are very bright and can be focused over a very tiny spot.

Of all the devices that produce laser light, laser diodes or semiconductor lasers are the most efficient and they come in smaller packages.

So they are widely used in various devices like laser printers, barcode readers, security systems, Autonomous vehicles (LIDAR), Fiber optic communications etc.

How does a Laser Diode work?

The working of a laser diode takes place in three main steps:

Energy Absorption

The laser diode consists of a p-n junction where holes and electrons exist. (Here, a hole means the absence of an electron).

When a certain voltage is applied at the p-n junction, the electrons absorb energy and they transition to a higher energy level.

Holes are formed at the original position of the excited electron. The electrons stay in this excited state without recombining with holes for a very small duration of time, termed as “recombination time” or “upper-state lifetime”. The recombination time is about a nanosecond for most laser diodes.

Spontaneous Emission

After the upper-state lifetime of excited electrons, they recombine with holes. As the electrons fall from higher energy level to a lower energy level, the difference in energy is converted into photons or electromagnetic radiation.

This same process is used to produce light in LEDs. The energy of the emitted photon is given by the difference between the two energy levels.

Stimulated Emission:

We need more coherent photons from the laser diode than the ones emitted through the process of spontaneous emission.

A partially reflecting mirror is used on either side of the diode so that the photons released from spontaneous emission are trapped in the p-n junction until their concentration reaches a threshold value.

These trapped photons stimulate the excited electrons to recombine with holes even before their recombination time.

This results in the release of more photons that are in exact phase with the initial photons and so the output gets amplified.

Once the photon concentration goes above a threshold, they escape from the partially reflecting mirrors, resulting in a bright monochromatic coherent light.

Construction of a Laser Diode:

A simple semiconductor laser diode is made up of the following parts in order:

  • Metal Contact
  • P-type Material
  • Active/Intrinsic Region (N-type Material)
  • N-type Material
  • Metal Contact.

Types of Laser Diodes

Double Heterostructure Laser Diode

In this type of laser diodes, an additional confinement layer of a different material is sandwiched between the two p-type and n-type materials.

Each of the junction between different materials is called a heterostructure. Because of the presence of two heterostructures, this type of laser diode is named as a double heterostructure (DH) laser diode.

The advantage of this DH laser diode is that that the active region is confined to a thin layer which gives better optical amplification.

Quantum Well Laser Diode

The quantum well laser diode has a very thin middle layer, which acts as a quantum well. The electrons will be able to use quantum energy levels when transitioning from a higher energy level to lower energy level. This gives a better efficiency for this type of laser diode.

Separate Confinement Heterostructure Laser Diode

The thin middle layer in the quantum well laser diode is very small for confining emitted light effectively.

To compensate this, in the separate confinement heterostructure laser diode, another two layers are added over the three initial layers.

These layers have a lower refractive index and help in confining the emitted light effectively.

Vertical Cavity Surface Emitting Laser Diode (VCSEL)

All the previously discussed laser diodes, the optical cavity is placed perpendicular to the current flow.

In the vertical cavity surface emitting laser diodes, however, the optical cavity is along the axis of current flow. The partially reflecting mirrors are placed near the ends of an optical cavity.

Other Types

  • Quantum Cascade Laser Diode
  • Interband Cascade Laser Diode
  • Distributed Bragg Reflector Laser Diode
  • Distributed Feedback Laser Diode
  • External Cavity Diode Laser
  • Vertical External Cavity Surface Emitting Laser Diode (VCSEL).


Diode laser hair removal in Delhi eliminates unwanted hair by the emitting a beam of light that is absorbed by the pigment in the hair i.e melanin.

The energy of the laser is concentrated in the hair shaft, effectively destroying it without affecting the surrounding skin.

Laser Diodes Treatment in DelhiThe diode laser hair removal in Delhi is the most effective of all laser wavelengths for hair reduction. Diode laser can remove hair from all parts of the body including the face, neck, arms, underarms, abdomen, back and legs. Diode laser can also treat sensitive areas like chest and bikini lines.

A diode laser uses semiconductor technology that produces the coherent projection of light in the visible to infrared range.

It uses a light beam with a narrow spectrum to target specific chromophores in the skin. Compared to other laser systems such as the Ruby and Alexandrite lasers.

The 800nm diode laser wavelength offers the deepest penetration levels and superior melanin absorption.

These unique characteristics make the diode laser the most suitable technology for laser hair removal in Delhi, enabling safe and effective treatment of all skin and hair types, in all body areas.

There may be some adverse pigment effects, but these are transient. The Diode laser is the best overall laser for all six skin types based on long-term use and safety and is especially effective in people with skin types 1 to 4.

Understanding diode laser hair removal technology:

The key to successful diode laser hair removal is the deliverance of high energy into the skin.

The energy is selectively absorbed by the melanin surrounding the hair follicle whilst not impacting the surrounding tissue.

Diode lasers use a single wavelength of light that has a high abruption rate in melanin. As the melanin heats up it destroys the root and blood flow to the follicle disabling the hair growth permanently.

High-quality laser hair removal machines such as The Primelase HR and The Elysion incorporate crystal freeze refrigeration contact cooling to protect the surface of the skin.

Making the treatment a comfortable, pain-free experience for patients. Diode lasers deliver high frequency, low fluence pulses and can be safely used on all skin types.

How Does A Diode Laser Work?

Diode lasers hair removal in Delhi use the principle of selective photothermolysis (abbreviated SPTL) to target specific chromophores in the skin, usually melanin or blood.

The lasers damage the chromophores by selectively heating them while leaving surrounding tissue unharmed.

When treating unwanted hair, for example, the melanin in the hair follicles is targeted and damaged which results in the disruption of hair growth and regeneration.

A diode laser can be complemented by cooling technology, or other pain-reducing methods which improve treatment efficacy and patient comfort.

  • Laser energy is selectively absorbed by the melanin in the hair follicle and converted to heat, diffusing to and injuring stem cells in bulb and bulge.
  • Most hair is permanently removed.
  • Hair that does regrow is finer and lighter than before.


  • Area cooled before, during and after.
  • Fluence carefully selected and increased to levels short of epidermal injury.
  • Immediate effect- vaporization of the hair shaft.
  • Later – perifollicular erythema and edema.

Advantages of Diode laser

  • The Diode laser hair removal in Delhi features a longer wavelength and thus able to provide better results among dark-skinned people.
  • This laser provides a safer and deeper penetration into the skin layer.
  • Large areas of the body tend to recover faster.
  • The rotatable 10-inch color touchscreen makes convenient operation.
  • Combined with Bi-polar RF, enhancing much better results.
  • High-level generator ensures powerful energy and longer working time.
  • Fast treatment: adopt specific wavelength 808 mm. Each pulse reaches the deeper skin.
  • The speed of large area hair removal significantly increases.
  • In business your customers are king. Diode laser hair removal in Delhi is all about delivering the most effective technology that gives high client satisfaction and the most ROI for your business.
  • However, not all diode lasers are created equal so it’s important to understand critical factors that deliver on this.
  • Effectively pulses mean cash so a smaller spot size requires more shots to treat a specific area.
  • However, with larger spot sizes it is important to remember the laser hair removal machine must have the power to handle a larger spot size.
  • The spot size, power and technical specifications of a diode laser hair machine can be easily used to help you can select the right model for your business.

Some Important Things:

It is often assumed that laser hair removal leads to the permanent removal of hair. This is partially correct since a patient can expect 90% reduction of hair.

Diode laser hair removal treatment in Delhi is an attractive alternative to shaving, waxing, depilatories, or electrolysis. However, it may not be the right choice for everyone.

People with naturally dark pigmented skin or deep tans are not fit for diode laser hair removal treatment.

This is mainly due to their darker skin, which has the tendency of absorbing too much of the laser energy resulting in blistering or permanent skin discoloration.

Although improvements have been made in diode laser hair removal treatment techniques, people with darker skin still require multiple careful sessions to achieve the desired result.

This treatment also does not work well on individuals with light colored hair containing very little melanin.

Diode laser hair removal treatment is ideally suited for people with lighter skin and dark hair because they require fewer treatments and achieve faster results.

Apart from diode laser treatment, ‘alexandrite’ is also a popular tool for hair removal. Alexandrite basically inhibits hair growth by deeply penetrating the hair follicles in the dermis of the skin.

In a diode laser hair removal treatment, along with laser, use of temperature is there. They both together immobilize the hair follicle eliminating its ability to produce hair.

It is always wise to consult a skin specialist in Delhi or Best dermatologist in Delhi before deciding on a hair removal treatment.

There are various companies offering diode laser hair removal treatment in Delhi, reliable, and well-equipped place for such treatments.

It is one of the leading clinics with specialists and skin care physicians. For more detailed information on diode laser hair removal, laser hair removal treatment