Tunable hundred-picosecond titanium sapphire laser

Abstract

The utility model discloses a tunable hundred-picosecond titanium sapphire laser, which comprises a total reflective mirror, a 1 / 4 slide, an electro-optical switch, a titanium sapphire crystal, a xenon lamp and an output mirror which are arranged in sequence, a dispersion element is additionally arranged between the electro-optical switch and the titanium sapphire crystal, the dispersion element is a prism system, and the tunable wavelength range of the dispersion element is 730nm-780nm. Based on the structural design and improvement of the xenon lamp pumped titanium sapphire electro-optic Q-switched laser in the conventional structural scheme, the laser output wavelength is tuned by adding the dispersion element, the laser output pulse width can be further compressed, hundred-picosecond laser output is realized, the practical effect is obvious, and the application range is wide. The method is worthy of popularization and use in the existing market.

Description

Technical Field

[0001] The utility model relates to the field of 100-picosecond lasers, and in particular to a tunable 100-picosecond titanium sapphire laser. Background Art

[0002] Lasers are rapidly developing in the field of medical aesthetics. Picosecond lasers, with their shorter pulse widths, result in shorter pulse-tissue interaction time, shorter treatment times, and fewer side effects. High-energy picosecond lasers are increasingly favored in the aesthetic medical field. Picosecond lasers are lasers with picosecond pulse widths. They feature ultrashort pulse widths, adjustable repetition rates, and high pulse energies. They are finding increasingly widespread applications in biomedicine, optical parametric oscillation, and biological microscopy, becoming an increasingly important tool in modern biological imaging and analysis systems.

[0003] At present, the conventional xenon lamp-pumped titanium sapphire electro-optical Q-switched laser can only achieve nanosecond-level high-energy laser output, but cannot achieve hundred-picosecond-level laser output. Its overall practicality remains to be discussed. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the prior art proposed in the background technology. In order to achieve the above purpose, this utility model adopts the following technical solutions:

[0005] A tunable 100-picosecond titanium sapphire laser comprises a fully reflective mirror, a quarter glass slide, an electro-optical switch, a titanium sapphire crystal, a xenon lamp, and an output mirror, which are arranged in sequence. A dispersion element is provided between the electro-optical switch and the titanium sapphire crystal. The dispersion element is a prism system, and the tunable wavelength range of the dispersion element is 730nm-780nm.

[0006] Preferably, the total reflective mirror coating has an HR of 730nm-780nm.

[0007] Preferably, the 1 / 4 glass slide is suitable for a wavelength of 730nm-780nm.

[0008] Preferably, both ends of the electro-optical switch are coated with AR@730nm-780nm.

[0009] Preferably, both ends of the titanium sapphire crystal are cut using the Brewster angle.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The utility model is based on the xenon lamp pumped titanium sapphire electro-optical Q-switched laser structure design in the existing conventional structural scheme, and adds a dispersion element on the basis of this laser structure, which can tune the laser output wavelength in the range of 730nm-780nm. The tuned wavelength can also further compress the laser output pulse width to achieve hundreds of picoseconds of laser output, and has significant effects in actual use, and is worthy of promotion and use in the existing market. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model.

[0013] In the figure: 1- full reflective mirror, 2- 1 / 4 glass slide, 3- electro-optical switch, 4- Ti: sapphire crystal, 5- Ti: sapphire crystal, 6- xenon lamp, 7- output mirror. DETAILED DESCRIPTION

[0014] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0015] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0016] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Reference Figure 1A tunable 100-picosecond Ti:sapphire laser comprises a fully reflective mirror 1, a quarter-glass slide 2, an electro-optical switch 3, a Ti:sapphire crystal 5, a xenon lamp 6, and an output mirror 7, arranged in this order. A dispersive element 4 is provided between the electro-optical switch 3 and the Ti:sapphire crystal 5. This dispersive element 4 is a prism system and has a tunable wavelength range of 730nm-780nm. The fully reflective mirror 1 is coated with HR@730nm-780nm. The quarter-glass slide 2 is suitable for wavelengths between 730nm-780nm. Both ends of the electro-optical switch 3 are coated with AR@730nm-780nm. The Ti:sapphire crystal 5 is cut at Brewster's angles.

[0019] It should be noted that the dispersion element 4 is preferably a prism system, but other dispersion elements may also be selected.

[0020] Based on the above structural design, when the device is in use, the titanium sapphire crystal 5 absorbs the pump light emitted by the xenon lamp 6 and emits a 700+nm laser, which oscillates in the resonant cavity formed by the total reflector 1 and the output mirror 7. Under the electro-optical Q-switching process of the total reflector 1, 1 / 4 glass slide 2, electro-optical switch 3, titanium sapphire crystal 5, xenon lamp 6, and output mirror 7, nanosecond output is generated. On the one hand, the dispersion element 4 can tune and control the laser output wavelength within the range of 730nm-780nm, and on the other hand, it can further compress the pulse width. Ultimately, the system achieves high-energy hundred-picosecond laser output with an adjustable wavelength range of 730nm-780nm.

[0021] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

Claims

1. A tunable 100-picosecond titanium sapphire laser, comprising a full-reflection mirror (1), a quarter glass slide (2), an electro-optical switch (3), a titanium sapphire crystal (5), a xenon lamp (6), and an output mirror (7), which are arranged in sequence, characterized in that: A dispersion element (4) is provided between the electro-optical switch (3) and the titanium sapphire crystal (5); the dispersion element (4) is a prism system, and the tunable wavelength range of the dispersion element (4) is 730 nm-780 nm.

2. The tunable 100-picosecond Ti:Sapphire laser according to claim 1, characterized in that: The total reflection mirror (1) is coated with HR@730nm-780nm.

3. The tunable 100-picosecond Ti:Sapphire laser according to claim 2, characterized in that: The 1 / 4 glass slide (2) is suitable for a wavelength of 730nm-780nm.

4. The tunable 100-picosecond Ti:Sapphire laser according to claim 3, characterized in that: Both ends of the electro-optical switch (3) are coated with AR@730nm-780nm.

5. The tunable 100-picosecond Ti:Sapphire laser according to claim 4, characterized in that: Both ends of the titanium sapphire crystal (5) are cut using the Brewster angle.

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