Laser pulse modulation device based on CrOCl crystal, and application thereof in all-solid-state laser
A laser pulse and modulator technology, applied in the laser field, can solve the problem of not finding the saturable absorption effect of trivalent ion crystals, and achieve the effect of ensuring high efficiency and uniformity, wide working band and large size
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Embodiment 1
[0068] The CrOCl laser pulse modulator is made of CrOCl crystal, and the specific steps include:
[0069] (1) Calculate the required thickness of the CrOCl crystal from the linear optical absorption coefficient of the CrOCl crystal in combination with the required initial transmittance;
[0070] (2) Select or peel off CrOCl crystals of required thickness, and process them into devices with regular shapes; for example, rectangles, squares, and circles;
[0071] (3) Coating the light-transmitting surface according to the working wavelength, outsourcing the cooling copper block, and making passive Q-switching or mode-locking components.
[0072] For the CrOCl crystal above, the unit cell parameters at room temperature are: The light transmission range is 0.6-18μm. It can be used as a laser pulse modulation device in this band.
[0073] The preparation method of above-mentioned CrOCl crystal, concrete steps are as follows: the Cr with purity 99.99% 2 o 3 and 99.9% pure CrCl ...
Embodiment 2
[0075] An all-solid-state laser based on a CrOCl laser pulse modulator includes a first pump source, a first front cavity mirror, a first laser gain medium, the CrOCl laser pulse modulator, and a first output mirror sequentially arranged along an optical path.
[0076] The first pumping source is a semiconductor laser diode (LD) or a xenon lamp. Provides pump energy.
[0077] The first front cavity mirror and the first output mirror form a first resonant cavity, the first front cavity mirror is coated with a highly reflective dielectric film for the laser working band, and the first output mirror is coated with a laser working band Reflective dielectric film;
[0078]The first laser gain medium is semiconductor, laser crystal, laser ceramic or laser glass. All solid media that can generate laser gain can be used as the first laser gain medium, processed into a cylinder or a cuboid, and its end face is coated with a dielectric film that is conducive to pump light absorption a...
Embodiment 3
[0082] An end-pumped Q-switched laser based on a CrOCl laser pulse modulator, including a second pump source 7, a first fiber coupling system 8, a first focusing system 9, a second front cavity mirror 10, and a second pumping source sequentially arranged along the optical path. Two laser gain mediums 11, the CrOCl laser pulse modulator 12, and a second output mirror 13. like image 3 shown.
[0083] The pumping light that the second pumping source 7 sends is input in the second laser gain medium 11 through the first optical fiber coupling system 8, the first focusing system 9 and the second front cavity mirror 10, and the laser light that produces is sent by the CrOCl laser pulse modulator 12 modulation, Q-modulated pulses are output from one end of the second output mirror 13.
[0084] The second front cavity mirror 10 and the second output mirror 13 form a second resonant cavity, and the length of the second resonant cavity is 27 mm;
[0085] The second pumping source 7 i...
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Abstract
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