Ultra wide spectral light sourceIt is a light source that can cover a wide range of wavelengths from ultraviolet to infrared, and even more. Its spectral range can usually reach hundreds to thousands of nanometers, demonstrating unique advantages and broad application prospects in multiple fields.

　　Ultra wide spectral light sourceThe generation mainly relies on nonlinear optical effects. Taking a supercontinuum laser as an example, when a high peak power ultra short pulse laser is injected into a highly nonlinear medium, it will trigger a series of nonlinear optical effects such as self phase modulation, four wave mixing, and stimulated Raman scattering. These effects interact with each other to broaden the narrowband input spectrum into a continuous broadband spectrum.

Features:

1. Wide spectral range: A single device can provide a continuous spectrum from ultraviolet (~170nm) to near-infrared (~2500nm) and even mid infrared, which can replace multiple lasers of different wavelengths or traditional broadband light sources.

2. Hyperspectral brightness: Compared to traditional white light sources such as xenon lamps, ultra wideband light sources have several orders of magnitude higher brightness and higher optical power per unit wavelength and unit solid angle, which can improve measurement signal-to-noise ratio.

3. High coherence: Some ultra wide spectrum light sources, such as supercontinuum generated by mode-locked laser pumping, have high temporal coherence and good spatial coherence, making them easy to couple into single-mode fibers and optical systems.

4. Good stability: Some ultra wide spectrum light sources adopt industrial grade compact structure design, which can ensure long-term stable power output, and are compact in size, rich in interfaces, and easy to integrate.