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Measuring method for intra-cavity loss of all-solid-state laser

A measurement method and laser technology, applied in the laser field, can solve the problems of difficulty in ensuring the accuracy and reliability of measurement results, and achieve the effects of easy operation, accurate measurement results, and simple measurement devices and processes

Active Publication Date: 2014-01-29
SHANXI UNIV +1
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Problems solved by technology

Although this method can measure the intracavity loss of a well-tuned and packaged laser, this method requires a comprehensive understanding of the energy level transition process of the gain medium during operation, otherwise the accuracy and reliability of the measurement results are difficult ensure

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  • Measuring method for intra-cavity loss of all-solid-state laser
  • Measuring method for intra-cavity loss of all-solid-state laser
  • Measuring method for intra-cavity loss of all-solid-state laser

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to this embodiment.

[0031] figure 1 It is a schematic diagram of the measurement of the intracavity loss of an all-solid-state laser according to the present invention. In the figure, 1 is the laser to be tested, 2 is the beam splitter, 3 is the power meter, and 4 is the self-zero beat detection system.

[0032] The measured laser is an all-solid-state continuous single-frequency tunable Ti:sapphire laser, and its titanium ion concentration ρ is 1.66386×10 25 m -3 , the stimulated emission cross section σ at 780nm s 3.8×10 -19 cm 2 , the crystal refractive index n is 1.76, using the formula The stimulated emission rate G describing the coupling between atomic transitions and laser cavity modes is obtained as 1.077×10 11 the s -1 ; The effective number of atoms N of the laser crystal is 8.19205×10 16 ; The cavity length ...

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Abstract

A measuring method for intra-cavity loss of an all-solid-state laser includes the steps: firstly, measuring output power of the all-solid-state laser with a power meter; then, measuring intensity noise of the all-solid-state laser under the output power by an automatic zero-beat detecting system, and determining a relaxation oscillation frequency value of the all-solid-state laser; and finally, computing with an intra-cavity loss expression including the output power and the relaxation oscillation frequency value of the laser, so that an intra-cavity loss value of the laser can be obtained. The measuring method is suitable for measuring intra-cavity loss of the all-solid-state laser of a non-injection locking structure.

Description

technical field [0001] The invention relates to laser technology, in particular to a method for measuring the intracavity loss of a laser, and is especially suitable for measuring the intracavity loss of an all-solid-state laser with a non-injection-locked structure. Background technique [0002] All solid-state lasers are widely used in laser ranging, laser display, quantum communication, laser radar and other fields because of their compact structure, small size, and stable operation. In order to obtain an efficient and stable all-solid-state laser, we must know the intracavity loss of the laser, because the relationship between the intracavity loss of the laser and the gain of the laser is the key to determining the operating state of the laser. [0003] At present, the most commonly used method for measuring the intracavity loss of solid-state lasers is the Findlay-Clay analysis method. In this method, the pumping threshold under different output coupling mirror transmi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
Inventor 卢华东苏静彭堃墀
Owner SHANXI UNIV
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