Miniaturized femto-second-solid laser oscillator

A technology of femtosecond lasers and oscillators, applied in the laser field, can solve problems such as difficulty in unifying output parameters, inability to adjust pulse width, difficulty in starting mode-locking, etc., and achieve the effect of ease of use and small and compact overall structure

Inactive Publication Date: 2004-08-04
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] Based on the extensive application research needs of femtosecond lasers and practical and reliable research results, the American Spectrophysics Corporation (S-P) (document 2. http: / / www.splasers.com / ), Coherent Company (Document 3. http: / / www.cohrccntinc.com / ) as early as 1994 has developed and launched prism-pair dispersion-compensated femtosecond Ti:Sapphire laser products and related products with a pulse width of more than 100 femtoseconds. Compared with the best result (~5fs) (Document 4: GSteinmeyer, D.H.Sutter, L.Gallmann, N.Matuschek, U.Keller; Science, Vol.286(1999) 1507), there is a big gap between the two , especially bulky and inconvenient to move
In response to these shortcomings, in recent years, the Technical University of Vienna in Austria and the Technical University of Switzerland have successively passed the registration of Femtolasers Produktions GmbH (Audili ) (Document 5. http: / / www.femtolasers.com / ) and Time-Bandwidth Company (Switzerland), (document 6. http: / / www.timebandwidth.com / ) and related products, and launched new products with simplified volumes, especially through the unique chirped mirror technology of Femtolasers Produktions GmbH in Austria, the pulse width of its products is only about 20 femtoseconds. , but this kind of chirped mirror laser is not only expensive, but the output parameters of each machine are difficult to unify, its mode locking is not easy to start, and the pulse width cannot be adjusted, which is not conducive to practical operation.

Method used

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  • Miniaturized femto-second-solid laser oscillator
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Examples

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Embodiment 1

[0027] Such as image 3 As shown, each of the components and figure 1 Correspondingly, all are installed on the bottom plate with a size of 550×200mm. The specific parameters and installation requirements for component selection are as follows:

[0028] The focus lens 1 has a focal length of 10 cm and a diameter of 2 cm, and is placed on an adjustment frame and a translation table that can adjust the lifting and left and right positions. The laser crystal 2 is a titanium-doped sapphire crystal cut by Brewster's angle, with a size of 4×4×5 mm, and is placed on an adjustment frame and a translation stage that can adjust the pitch and angle. The first plano-concave total mirror 3 and the second plan-concave total mirror 4 have a radius of curvature of 100mm, a diameter of 12.7mm, and a thickness of 6mm. The material is crown glass and the relative distance is about 105mm. ; Among them, the concave surface of the first plano-concave total mirror 3 is plated with 532nm anti-reflection...

Embodiment 2

[0030] The specific parameters and installation of each element are as in Example 1, but the size of the climber is 20×20mm, which is plated with a 45-degree incident all-reflective dielectric film in the 700-900nm band.

Embodiment 3

[0032]The specific parameters and installation of each component are as in Example 1. However, 9 is a plane total mirror, a crown glass substrate with a diameter of 25.4mm and a thickness of 4mm is coated with a broadband dielectric film that totally reflects the wavelength of 700-900nm under normal incidence; 8 is a plane output mirror, and the aperture is 25.4 A fused silica substrate with a thickness of 2 mm and a thickness of 2 mm is coated with a dielectric film with a transmittance of 10% in the 750-850 nm band under normal incidence. There is no need to climb the mirror 12 and the gold-plated mirror 13 at this time.

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Abstract

This invention relates to a kind of solid laser oscillator comprising a focusing lens, a laser crystal, two dual-colour medium film concave reflection mirrors for antireflecting of pump laser and total reflection of femtosecond oscillation laser broadband, three total reflecting mirrors with small angles, a vertical broadband total reflecting mirror, a planar output mirror, two quartz prisms, a climb mirror, a gold-coated mirror and a base. This invention has the advantages of narrow pulsowidth, wide spectrum, easy start of locked module.

Description

Technical field [0001] The present invention relates to the field of laser technology, in particular to a solid-state self-mode-locking laser oscillator. Background technique [0002] In the research of laser technology, ultrashort laser pulses, as a sign of the time limit that humans can control, and their unique characteristics of revealing the transient dynamics of matter in the microscopic world, have always been one of the most popular laser research contents. At present, the shortest pulse width that people can obtain in the laboratory with pulse compression technology is close to 4fs (1fs=10 -15 Seconds), its application research has penetrated into the most cutting-edge topics of physics, chemistry, biology, communications and other disciplines, and has led to many new disciplines, such as strong field physics, femtosecond chemistry, ultra-high-speed and large-capacity optical communications and other disciplines. Formation and development. In 1999, A...

Claims

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Application Information

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IPC IPC(8): H01S3/081H01S3/098H01S3/16
Inventor 魏志义吕铁铮滕浩张杰
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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