2.0um High Power CW Fiber Laser for Industrial & Medical Applications

Thulium doped fiber laser with a wavelength of 1940nm is located at the peak of water absorption and has high efficiency of vaporization cutting. In human tissues, the penetration depth is shallow, only 0.1-0.2mm. In laser surgery, tissue cutting is more accurate. The heating speed of the tissue surface is directly proportional to the absorption of the laser wavelength of the tissue. The 1940nm laser can quickly reach the coagulation temperature of the tissue, so as to realize the simultaneous cutting of vaporized tissue and hemostasis. Thulium doped fiber laser of 1940nm can be used in vaporization resection of prostate.

2.0um high power continuous or pulsed fiber laser can be used in transparent materials such as plastic laser cutting, laser welding and other industrial applications.

Connet developed 1.5um and 2.0um high power CW fiber lasers to meet the needs of industrial and medical fields.

SLED Braodband Light Sources for OCT

Optical coherence tomography (OCT) is a non-invasive two-dimensional imaging technology based on light reflection. It uses super radiation light emitting diode or ultra short pulse laser to emit low coherence light to the tissue to be examined and the back-view beam. The time delay of tissue reflected light is recorded by the interferometer. The light is reflected by the rear-view mirror, and then transformed into a figure with a resolution of up to 10-20um, and can be 3D reconstructed. Because its resolution is close to the level of histology, it is known as optical biopsy.

At present, OCT is divided into two categories: time domain OCT (TD-OCT) and frequency domain OCT (FD-OCT). Time domain OCT is to superimpose, interfere and image the light signal reflected from the tissue at the same time with the light signal reflected from the reference reflector. The characteristic of frequency domain OCT is that the reference reflector of the reference arm is fixed, and the interference of the signal is realized by changing the frequency of the light wave of the light source. FD-OCT can be divided into two types: (1) laser scanning OCT (SS-OCT), which emits light waves of different wavelengths using a laser source with variable wavelength; (2) spectral OCT (SD-OCT), which uses a high resolution spectrophotometer to separate light waves of different wavelengths.

OCT technology has many advantages, such as non-contact and non-destructive, high detection sensitivity and noise suppression ability, high resolution and no damage, no radiation to living tissue in physical examination, low cost, simple structure, etc. it has important application value and broad development prospect in material science and biomedical field.