Femtosecond optical parameter oscillator for synchronous pump of all-solid-state mode-locking Yb laser

An optical parameter and laser technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of low output power and high price, and achieve the effect of high output power, low cost and low price

Active Publication Date: 2014-09-24
XIDIAN UNIV
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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a femtosecond optical parametric oscillator pumped synchronously by an all-

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  • Femtosecond optical parameter oscillator for synchronous pump of all-solid-state mode-locking Yb laser
  • Femtosecond optical parameter oscillator for synchronous pump of all-solid-state mode-locking Yb laser
  • Femtosecond optical parameter oscillator for synchronous pump of all-solid-state mode-locking Yb laser

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Example Embodiment

[0044] Specific embodiments of the present invention:

[0045] in figure 1 Among them, the all-solid-state femtosecond mode-locked Yb laser 1 is used to generate a femtosecond pulse width pump laser. After passing through the optical isolator 2 and the half-wave plate 3, it is focused by the focusing lens 4 into the PPLN crystal 6. The first concave mirror 5, the second concave mirror 7, the GTI mirror 8, the plane mirror 9 and the output mirror 10 constitute a parametric oscillation resonant cavity, wherein the first concave mirror 5 and the second concave mirror 7 form a confocal tight focus cavity Type, so that the signal beam waist size on the PPLN crystal matches the pump light beam waist size, the GTI mirror 8 provides negative dispersion, the plane mirror 9 returns the signal light in the original path and can realize the cavity length tuning of the parametric cavity , The output mirror 10 outputs signal light; under the conditions of satisfying phase matching, cavity leng...

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Abstract

The invention discloses a femtosecond optical parameter oscillator for a synchronous pump of an all-solid-state mode-locking Yb laser, wherein the all-solid-state mode-locking Yb laser is high in output power, is compact in structure, and is low in cost. Coherent femtosecond near-intermediate infrared laser is achieved through combining with the technology of femtosecond optical parameter oscillation of the synchronous pump, wherein the signal wavelength of the laser can be continuously tuned in a range from 1.4 microns to 1.8 microns and the free wavelength of the laser can be continuously tuned in a range from 2.5 microns to 4.2 microns. Compared with a conventional femtosecond optical parameter oscillator based on a mode-locking Ti-sapphire laser pump, the femtosecond optical parameter oscillator provided by the invention is simple in structure, is stable in performance, is high in output power, and is low in cost.

Description

technical field [0001] The invention belongs to the technical field of ultrafast lasers, in particular to a femtosecond optical parametric oscillator pumped synchronously by an all-solid-state mode-locked Yb laser. Background technique [0002] After decades of research on the generation of femtosecond laser pulses, people have successfully used the principles of Kerr lens mode-locking (KLM) and SESAM passive mode-locking to obtain near-infrared femtosecond pulses from visible light to about 2 μm in many kinds of gain media. pulse. Compared with lasers that use population inversion to provide laser gain, femtosecond optical parametric oscillators (OPO) use pump light, signal The principle of mutual coupling of light and idle light energy to generate ultrashort laser pulses has unique advantages: First, the femtosecond OPO pumped by synchronous pumping can use the same crystal and the same femtosecond pumping source to simultaneously Generate femtosecond pulse output of mul...

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Application Information

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IPC IPC(8): H01S3/094H01S3/108
Inventor 朱江峰田文龙王军利魏志义
Owner XIDIAN UNIV
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