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High precison femtosecond synchronous technology and device

A femtosecond laser and synchronization device technology, applied in the field of femtosecond laser synchronization technology and devices, can solve problems such as low synchronization accuracy, achieve the effects of narrow pulse width, avoid gain competition effect, and high synchronization accuracy

Inactive Publication Date: 2004-12-15
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the products and devices that can be used as commercial synchronous femtosecond lasers all adopt the active synchronization method. As mentioned above, this technology mainly relies on the use of a circuit feedback system outside the oscillator cavity to stabilize the length of the two laser cavities to realize the synchronization between the oscillators. Synchronous locking, but its synchronization accuracy is usually one to two orders of magnitude lower than passive synchronization

Method used

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  • High precison femtosecond synchronous technology and device
  • High precison femtosecond synchronous technology and device
  • High precison femtosecond synchronous technology and device

Examples

Experimental program
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Embodiment 1

[0030] Such as image 3 shown, where each element is associated with figure 1 Correspondingly, all are installed on the base plate with a size of 800×400mm. The specific parameters and installation requirements for component selection are as follows:

[0031]Put the focusing lenses 1 and 2 on the adjustment frame that can adjust the lifting and left and right positions, and place the adjustment frame on the 40×40mm translation platform, and the plano-concave mirrors 5 and 7 are located on the two-dimensional adjustable fine-tuning frame , while the other plano-concave full mirror 6, 8 is located on the two-dimensionally adjustable fine-tuning frame and the translation stage of 40 × 40mm. The laser crystals 3 and 4 are located on the crystal adjustment frame and the horizontal rotating table that can adjust the pitch and angle. The two ends of the adjustment frame are connected to the water cooling cycle with rubber tubes, and the rotating crystals are respectively placed on t...

Embodiment 2

[0037] The specific parameters and installation of each element are as in embodiment 1. However, 13 and 14 are used as planar total reflection mirrors, and a K9 glass substrate with a diameter of 25.4mm and a thickness of 4mm is coated with a broadband dielectric film that is fully reflected at 700-900nm under normal incidence; 11 and 12 are used as planar output mirrors, and A fused silica substrate with a diameter of 25.4mm and a thickness of 4mm is coated with a dielectric film with a transmittance of 10%-20% in the 750-850nm band under normal incidence.

Embodiment 3

[0039] The specific parameters and installation of each element are as in embodiment 1. However, the coupling crystal 19 is a quartz crystal with a thickness of 5 mm and a Brewster angle cut.

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Abstract

This invention discloses a high-accuracy femosecond laser synchronous technology separating the gain medium and the synchronous couple medium of two sets of femosecond lasers to be synchronized to enable them to use the independent gain medium then their oscillation light beams are intercrossed in the cavity and coupled in a kerr medium to realize synchronization with the help of generated cross phase modulation effect (XPM), the two lasers can apply a same kind or different mediums as their own gain mediums. This invention also discloses a synchronization device including two resonators with one gain crystal for each and one coupled cavity set with a coupled crystal in it the oscillation lasers in the resonators are overlapped in the crystal of the coupled caving to generated XPM effect so as to realize synchronization.

Description

technical field [0001] The invention relates to a femtosecond laser synchronization technology and device. Background technique [0002] In the research of laser technology, ultrashort pulse laser, as the time limit mark that can be controlled by human beings and its unique characteristics of revealing the transient dynamics of matter in the microcosm, has always been one of the most popular laser research contents, and its application research has penetrated into physics. The most cutting-edge topics of science, chemistry, biology, communication and other disciplines have led to the formation and development of many new disciplines, such as strong field physics, femtosecond chemistry, ultra-high-speed and large-capacity optical communication and other disciplines. Titanium-doped sapphire laser oscillator (Document 1, D.E.Spence, P.N.Kean, W.Sibbert; Opt Lett.16 42 (1991)) using KLM (Kerr LensModelocking) technology, with its simple structure, good stability, output pulse T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/00
Inventor 魏志义田金荣赵玲慧张军王鹏韩海年张杰
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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