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Polarization separation composite cavity holmium laser

A holmium laser and polarization separation technology, applied in the field of polarization separation composite cavity holmium lasers, can solve the problems of large output pulse width and inability to realize narrow pulse width output, etc., and achieve the effect of high power output and power output.

Pending Publication Date: 2022-05-27
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The invention provides a polarization-separated compound cavity holmium laser, which can solve the problem that the existing Tm / Ho bonding laser has a relatively large output pulse width and cannot realize narrow pulse width output

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  • Polarization separation composite cavity holmium laser

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Embodiment Construction

[0027] The present invention will be described in detail below with reference to the examples, but the present invention is not limited to these examples.

[0028] The embodiment of the present invention provides a polarization separation composite cavity holmium laser, such as figure 1 As shown in the figure, it includes: a pump source 1, a coupling lens group 2, a first cavity mirror 3, a bonding crystal 4, a polarizer 5, an electro-optical modulation O crystal 6 and output The coupling mirror 7; the pump source 1 is used to output the pump laser; the coupling lens group 2 is used to couple the pump laser into the bonding crystal 4; the bonding crystal 4 is a Tm and Ho doped YLF crystal, and the bonding crystal 4 is used for Under the excitation of the pump laser, Tm laser and Ho laser are generated; the polarizer 5 is used to reflect the σ-polarized Tm laser and transmit the π-polarized Ho laser; the holmium laser also includes a second cavity mirror 8, and the second cavit...

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Abstract

The invention discloses a polarization separation composite cavity holmium laser, belongs to the technical field of solid laser, and can solve the problems that the output pulse width of an existing Tm / Ho bonding laser is large, and narrow pulse width output cannot be achieved. The holmium laser comprises a pumping source, a coupling lens group, a first cavity mirror, a bonding crystal, a polarizing film, an electro-optic Q-switched crystal and an output coupling mirror, the coupling lens group is used for coupling the pumping laser into the bonding crystal; the bonding crystal is a Tm and Ho doped YLF crystal, and the bonding crystal is used for generating Tm laser and Ho laser under the excitation of the pumping laser; the polaroid is used for reflecting the sigma polarization Tm laser and transmitting the pi polarization Ho laser; the holmium laser further comprises a second cavity mirror, and the second cavity mirror is arranged on the reflection light path of the polaroid. The first cavity mirror is used for transmitting the pumping laser and reflecting the Tm laser; the second cavity mirror is used for reflecting the Tm laser; and the output coupling mirror is used for transmitting the Ho laser with a preset proportion and reflecting the rest of the Ho laser. The invention is used for the holmium laser.

Description

technical field [0001] The invention relates to a polarization separation composite cavity holmium laser, which belongs to the technical field of solid-state lasers. Background technique [0002] Common implementations of all-solid-state holmium (Ho) lasers include: GaAlAs laser diode (LD) (wavelength range 750nm~810nm) pumped Tm, Ho co-doped laser sensitized by thulium (Tm) ions; 1.9μm laser pumped Single-doped holmium lasers; intracavity resonantly pumped holmium lasers for thulium lasers, and Tm / Ho bonded lasers. [0003] Tm, Ho co-doped lasers have serious cooperative up-conversion losses, and only a few milliwatts of laser output at room temperature, or even no light. The 1.9 μm laser-pumped Ho laser system is complex in structure, bulky and expensive, and the optical-to-optical conversion efficiency from LD to the final Ho laser output is low. Although the structure of the 1.9μmLD-pumped holmium laser is more compact, it can currently achieve 30% to 40% of the light-...

Claims

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Application Information

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IPC IPC(8): H01S3/10H01S3/081H01S3/08
CPCH01S3/10061H01S3/08059H01S3/0811
Inventor 翁文林文雄黄海洲吴鸿春李锦辉张政林紫雄邓晶叶辉
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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