Method for acquiring high-power broadband green-light optical frequency comb

An optical frequency comb and green light optics technology, applied in optics, nonlinear optics, lasers, etc., can solve problems such as narrow spectrum, low pulse power, and difficult control of time-frequency characteristics, so as to suppress additional phase noise, improve efficiency and , Overcoming the narrowing effect of the pulse spectrum

Active Publication Date: 2013-03-20
广东华快光子科技有限公司 +1
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Problems solved by technology

[0015] The technical problem to be solved by the present invention is to provide a method for obtaining a high-power broadband green light optical frequency comb, which overcomes the narrow spectrum, low pulse power, and Time-frequency charac

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  • Method for acquiring high-power broadband green-light optical frequency comb
  • Method for acquiring high-power broadband green-light optical frequency comb
  • Method for acquiring high-power broadband green-light optical frequency comb

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Embodiment approach

[0053] Such as figure 2 As shown, in this embodiment, the frequency standard is a frequency-stabilized continuous laser, and as another embodiment of the present invention, the frequency standard is a radio frequency atomic clock.

[0054] Such as Figure 7 As shown, in this embodiment, the optical frequency doubling refers to using the second-order nonlinear effect in the nonlinear crystal to frequency-double the optical frequency ω of the incident light, and then generate frequency-doubled light with a frequency of 2ω.

[0055] In this embodiment, the nonlinear crystal is a barium metaborate crystal. As another embodiment of the present invention, the nonlinear crystal is also a periodically poled lithium niobate crystal.

[0056] In this embodiment, a frequency doubling crystal is used to optically frequency-double the output pulses of each ytterbium-doped optical frequency comb to generate frequency-doubled green light with a wavelength of preferably 532 nm.

[0057] Su...

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Abstract

The invention relates to a method for acquiring a high-power broadband green-light optical frequency comb. The method comprises the following steps of: locking a plurality of ytterbium-doped optical frequency combs on a same frequency standard; (2) detecting time delay joggling among optical comb pulses by adopting a balanced optical cross correlation detection method, and always keeping time coincidence of frequency-doubled green-light pulses during a coherent combining process; (3) performing optical frequency doubling on the output pulse of each ytterbium-doped optical frequency comb by using a frequency doubling crystal to generate frequency-doubled green light of which the wavelength is 525-535 nanometers; and (4) performing coherent combining of multiple paths of pulses through a multi-wavelength wavelength division multiplexer to obtain green-light optical comb output having width spectral characteristic. Due to the adoption of the method, the problems of narrow optical spectrum, low pulse power, difficulty in controlling time frequency characteristic and the like existing in the conventional green light generating technology are solved, the average green light power is increased, the green light brightness is enhanced, and the frequency of frequency-doubled light and the average power of green-light pulses are increased.

Description

【Technical field】 [0001] The invention relates to a method for obtaining a high-power broadband green light optical frequency comb. 【Background technique】 [0002] Broadband green pulsed light sources precisely controlled in the time-frequency domain are currently used in material processing, medical diagnosis, instrument manufacturing, basic research, optical storage, entertainment, image recording, detection and control, full-color display, direction finding and indication, national defense and military affairs, etc. Applications in civil, industrial and military fields are increasingly prominent. Especially in recent years, with the development of high-density optical disk storage and high-precision laser printers, the precisely controlled green light source has become the focus of attention. An ideal light source, and can be combined with mature visible light detection technology, by measuring and analyzing the return time of the laser pulse to accurately measure the po...

Claims

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Application Information

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IPC IPC(8): G02F1/37H01S3/109
Inventor 梁崇智曾和平闫明
Owner 广东华快光子科技有限公司
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