Light source and light source system
A light source system and light source technology, applied in the direction of optical waveguide light guide, optics, cladding optical fiber, etc., can solve the problem of reducing the wavelength dependence of the output pulse beam
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 example
[0028] Referring to FIG. 1 , a light source system 1 includes a light source 10 , a sensor 54 and a control unit 60 . The light source 10 converts the pulsed beam P10 (referred to as "pulse beam P10") to have a wider bandwidth (referred to as "broadband white beam P20"), and outputs the broadband white beam P20. A sensor 54 extracts a portion of the broadband white beam P20 and detects its spectrum. The control unit 60 controls the components of the light source 10 (to be described later) based on the spectrum detected by the sensor 54, and adjusts the wavelength dependence of the broadband white light beam P20.
[0029] The light source 10 is composed of the following parts: a short-pulse laser light source unit 11 (referred to as a laser light source unit 11), which outputs femtosecond to picosecond pulse beams; a pulse beam splitter 17, which splits the pulse beam P10 according to a predetermined The beam ratio is divided into the first pulsed beam P11 and the second pulse...
no. 1 example
[0054] In this example, the laser light source unit 11 is a Ti:sapphire laser. The pulsed light beam P10 has a center wavelength of 800 nm, a pulse width of 100 fs (100 femtoseconds), and an average light intensity of 400 mW. The optical isolator 12 is composed of a Faraday rotator and a polarizer. The pulse beam splitter 17 uses a beam splitter to split the pulse beam P10 into two pulse beams P11 and P17 with an average light intensity of 200 mW. The light intensity of the split pulse beam is adjusted by the polarizing beam splitter 22 and the λ / 2 wave plate 21 . Thereafter, the pulsed beam P11 whose light intensity has been adjusted is input into the first photonic crystal fiber 24 through the objective lens 49 with a magnification of 40, and converted into the first output pulsed beam P13. The first photonic crystal fiber 24 is index-guided, has large nonlinearity, and has a length of 1 meter. The polarization, phase and light intensity of the first output pulse beam P13...
no. 3 example
[0070] Referring to FIG. 7 , light source system 201 is similar to light source system 1 (shown in FIG. 1 ), except for the location of phase adjuster 28 .
[0071] In the light source unit 210 shown in FIG. 7 , the phase adjuster 28 is placed upstream of the first photonic crystal fiber 24 , whereas it is located downstream of the first photonic crystal fiber 24 in the light source 10 (shown in FIG. 1 ).
[0072] The phase adjuster 28 includes a first adjustment unit 28a and a second adjustment unit 28b. As shown in FIG. 2A , the first adjusting unit 28 a is provided with four reflective mirrors whose intervals can be changed, which are used to roughly adjust the incident light beam (ie, the first output pulsed light beam P11 ). The second adjustment unit 28b includes diffraction gratings 36 and 38 (as shown in FIG. 2B ), and a spatial light modulator 37 (as shown in FIG. 2B ), which are used to finely adjust the phase of the pulsed beam P11 with respect to each frequency. ....
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More