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Mode-locked solid-state laser apparatus

A solid-state laser and mode technology, applied in lasers, laser parts, phonon exciters, etc., can solve problems such as difficulty in obtaining small-scale mode synchronous solid-state laser devices and generating soliton pulses

Inactive Publication Date: 2009-04-01
FUJIFILM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0039] That is, when miniaturizing a mode-synchronized solid-state laser device, a structure for achieving miniaturization has been proposed, but the conditions for stably generating soliton pulses in the miniaturized structure have not been clarified, so it is difficult to obtain a practical and stable mode synchronization Oscillating compact mode-synchronized solid-state laser device

Method used

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  • Mode-locked solid-state laser apparatus

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Embodiment Construction

[0094] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[0095] figure 1 It is a schematic side view showing a soliton (solition) mode-synchronized solid-state laser device according to an embodiment of the present invention. as it should figure 1 As shown, the mode-synchronous solid-state laser device includes: a semiconductor laser 11, which generates excitation light (pumping light, Pumping light) 10; an excitation optical system 12, which inputs the excitation light 10 into the resonator; a dichroic mirror 13, which excites The rear section of the optical system 12 is arranged on the extension line of the optical axis of the resonator described later; the concave output mirror 14 constitutes one side terminal of the resonator; the SESAM (semiconductor saturable absorbing mirror) 16 constitutes the other end of the resonator a side terminal; a solid laser medium 15 arranged inside a resonator including the SE...

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Abstract

A mode-locking solid-state laser apparatus is a soliton-type mode-locking solid-state laser apparatus, having a solid-state laser medium, a saturable absorption mirror and a negative group velocity dispersion element in a resonator, wherein the solid-state laser medium and he absorption mirror are disposed at a distance not greater than twice a Rayleigh length. Then, the absorption modulation depth Delta R of the saturable absorption mirror is set to a value not less than 0.4%, and the absolute value lDl of a total intracavity dispersion amount when light having a predetermined wavelength makes one round trip in the resonator, which is represented by the following mathematic expression (1), is set within a pulse bandwidth in which operation modes other than a fundamental period soliton pulse can be suppressed by the saturable absorption mirror.

Description

technical field [0001] The present invention relates to a solid-state laser device, and more specifically, to a mode-synchronized solid-state laser device that is easy to downsize and can realize short-pulse operation. Background technique [0002] Conventionally developed solid-state laser devices use a semiconductor laser (LD) as an excitation light source to excite solid-state laser media (laser crystals, ceramics, glass, etc.) to which rare earth ions or transition metal ions are added. Among them, short-pulse laser devices that generate so-called short-pulse light in the picosecond to femtosecond region have been researched and advocated in many application fields such as medical treatment, biology, machinery industry, and measurement, and after actual verification, some of them have been put into practical use. . [0003] This laser produces short pulses through an action known as mode synchronization. Briefly, the so-called mode synchronization refers to a phenomeno...

Claims

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Application Information

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IPC IPC(8): H01S3/098H01S3/08
CPCH01S3/08004H01S3/0815H01S3/09415H01S3/0805H01S3/1675H01S3/1618H01S2301/085H01S3/1118H01S3/08H01S3/08009H01S3/09408H01S3/08059
Inventor 笠松直史
Owner FUJIFILM CORP
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