#532nm

An overview of Crylink's 532nm laser for Medical Application

One of the most often utilized lasers in medicine is the 532nm laser (frequency-doubled Nd:YAG laser). Because red substances absorb green laser energy at a rapid rate, blood arteries rich in hemoglobin may absorb the majority of the laser energy. In patients with diabetic retinopathy, frequency-doubled Nd:YAG lasers (wavelength 532 nm) are utilized for pan-retinal photocoagulation. These lasers are also used to cure eye floaters in some circumstances.

Gain medium - Nd YAG

In order to emit an infrared laser with a wavelength of 1064nm, the working medium of the laser is doped with trivalent Neodymium ions in a yttrium aluminum garnet crystal.

AO-Q switch：TeO2

We employ a TeO2 crystal as an AO-Q-switch so that we may change the radio-frequency signal delivered to the AO-Q-switch to regulate Q. Roughen the Yd:YAG crystal's side face. Its oscillation efficiency is improved by grounding both sides of it into plane.

BBO Frequency Doubling

Because of its strong transmittance in 532nm and 1064nm and second-order nonlinear optical susceptibility, BBO was chosen as the frequency doubling crystal. BBO replaces the Yd:YAG laser with a 532nm laser. The oscillation is strengthened by coating the harmonic separator with 1064nm high transmittance films and 532nm high-reflective films.

Feature

Higher gasification result

Minimal thermal damage

Less bleeding

Low lasing threshold

High slope efficiency

Large luminescence cross-section

Linearly polarized emission and single-mode output

Application

partial irradiation hemostasis:

532nm laser has high gasification result and can rapid cut tissue, is less harmful to tissues around. Meanwhile because of the high absorption rate of red substances to green laser, the blood vessels rich in hemoglobin can absorb most of the laser energy. So 532nm laser is good at hemostasis.

treatment of central serous choroidoretinopathy

treatment of pterygium

treatment of syringoma

Verdict

Description

The world's most sophisticated side or end pump technology at 532nm wavelength has produced a 532nm green laser marking machine with a high electro-optical conversion rate of over 30% to 45 percent, low power consumption, and a high electro-optical conversion rate of over 30% to 45 percent by CRYLINK. Customers can select their preferred pump type based on their needs. It may be used to perforate ceramic materials, mark non-metallic materials, mark metallic materials, mark or calibrate optics, and mark non-metallic materials. Precision is higher in the same type of product.

Feature

The rate of electro-optic conversion is high.

Low usage of electricity

Exceptional accuracy

Good beam quality with a small spot diameter

Concentration of energy

Application

IC Chip Marking

Multiphoton Micro-ablation

Laser Welding Of Plastics

Verdict

If you're interested in learning more about our goods, please don't hesitate to contact us.

CRYLINK provides various types of high-power X/Y scanning mirrors, mainly including silicon scanning mirrors and quartz scanning mirrors, for laser scanning mirror systems above 6Kw. Laser wavelengths include 355nm, 532nm, 1064nm, and 10.6μm.

Description

Thanks to the special coating technology, it is possible to ensure that the mirror dissipates heat quickly and with little temperature rise at the laser focus during use. The amount of change in the shape of the used surface is very small. The mirror has a high threshold of laser damage, which can meet the requirements of long-term stable use of the scanning mirror.

High-Quality Substrate

· High-quality substrate material, rough machining, and polishing quality are the main factors affecting the performance of optical elements.

· The mirrors are made of imported Corning 7979 and 7980 materials with guaranteed quality;

· For high-power laser optical elements, it is particularly required that the edge collapse of the substrate should be well controlled, otherwise the mirror's film will crack and extend in the process of use.

· The surface finish and roughness of the substrate will greatly affect the damage threshold of the film.

· The surface shape of the substrate will affect the shape of the laser spot, so PV and RMS need to be controlled.

High Coating Quality

· Good reflectivity of the lens under different incident angles.

· Under different incident angles, the reflectivity of the probe light is high enough.

· After coating, the deformation of the substrate should be small enough. The stress relief design of the film must be considered.

· Good laser damage threshold.

Verdict

CRYLINK’s laser scanning mirror products have high-quality polished substrates, low residual stress in the film layer of the lens after coating, and good surface shape.

By applying electric field control to the electro-optic crystal, the refractive index of the electro-optic crystal in a certain direction can be changed, so that the Pockel unit of the electro-optic modulator can be used as a variable half wave plate to change the polarization state. The wave Kerr unit of the electro-optic modulator is placed between two vertical polarizers to realize light intensity modulation. Electro optic effect can be divided into transverse electro-optic effect and longitudinal electro-optic effect. In the transverse electro-optic effect, the propagation direction of light is perpendicular to the electric field, while in the longitudinal electro-optic effect, the propagation direction of light is parallel to the electric field.

CRYLINK’s pockels cells use protective windows with high-quality AR coating, which can ensure a high transmission rate and prolong the service life of the device.

The half-wave voltage of the longitudinal electro-optic effect is independent of crystal size, so it is difficult to realize high-frequency electro-optic modulation. The working principle of BBO pockels cells is based on transverse electro-optic effect, the half wave voltage can be reduced by changing the size of BBO crystal. Crylink can provide BBO pockels cells with different aperture and lengths, which can adapt to different environments. Due to its low ringing effect and high laser-damaged threshold, the maximum frequency of Crylink’s BBO pockels cells can reach 1MHz.

Features

· Low ringing effect

· Low insertion loss

· Small and compact

· Multi wavelength selection

· High laser-damaged threshold

Application

· High repetition rate DPSS Q-switch

· Pulse selection

· High repetition rate regenerative amplifier control

· Cavity dumping

· High frequency optical switch

· Beam chopper

· Optical power stabilizer

Verdict

CRYLINK can provide BBO pockels cells with different aperture and length that have the features of low ringing effect, small size, light weight, and high laser-damaged threshold.

6D Laser system is a proven non- invasive device for the appearance of cellulite

Use the specific wavelength of the laser and the mechanism that the laser can penetrate into the skin to stimulate the corresponding acupuncture points. The mechanism is the same as that of acupuncture, but the human body will not have pain and discomfort. Specific wavelengths have different effects.