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Solid blue light laser using multiple channel frequency-multiplication period super lattice as variab frequency crystal

A frequency conversion crystal and multi-channel technology, which is applied in the direction of lasers, laser components, phonon exciters, etc., to achieve the effect of high-efficiency triple frequency blue light output

Inactive Publication Date: 2004-04-28
NANJING UNIV
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Problems solved by technology

None of the above solutions involve the use of multi-channel cascaded periodic superlattices to achieve 1342nm triple frequency blue light output

Method used

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  • Solid blue light laser using multiple channel frequency-multiplication period super lattice as variab frequency crystal
  • Solid blue light laser using multiple channel frequency-multiplication period super lattice as variab frequency crystal
  • Solid blue light laser using multiple channel frequency-multiplication period super lattice as variab frequency crystal

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Embodiment Construction

[0045] As shown in the figure, on the left is a seven-channel periodic structure, which is used to realize the frequency doubling process; on the right, the periodic structure is used to realize the sum-frequency process. In the experiment, the fundamental wave light can be passed through the seven channels respectively to find the sum-frequency process. The maximum satisfaction of the matching conditions is obtained to obtain efficient Blu-ray output.

[0046] According to the above formula, we use seven channels for the first segment of the periodic structure used to achieve frequency doubling, and the matching temperature is from 89°C to 131°C, increasing at intervals of 7°C. The corresponding periods are calculated to be 14.608484 μm, 14.630559 μm, 14.652308 μm, 14.673729 μm, 14.694818 μm, 14.715572 μm, 14.735989 μm. For the periodic structure used to realize the sum frequency in the second stage, the matching temperature is 110°C, and the corresponding period is 4.881003μ...

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Abstract

A solid blue light laser with multichannel multiple frequency period super lattice as the frequency-changer crystal takes a semiconductor laser as the pump source, putting a front surface filming mixed with Nd: YVO4 crystal and a cavity mirror to constitute a resonant cavity of 1.342um laser, and a trebling device of 1.342um laser composed of a multichannel cascade periodic optical super lattice in a temperature control oven of pump light channel with 1.342um basic wave length, idle channels are corresponding to idle multifrequency matched temperature so as to select channels with the matched temperature nearest to the sum frequency as the working channels to realize high efficient, high stable blue light trebling.

Description

1. Technical field [0001] The invention relates to a device for triple frequency by multi-channel cascaded periodic superlattice to realize short-wavelength laser output. Especially blue lasers with superlattices such as lithium tantalate as frequency conversion crystals. 2. Background technology [0002] The use of superlattice to achieve frequency doubling and triple frequency is an important means to achieve short-wavelength laser output. The use of the second-order nonlinear effect to achieve triple frequency needs to include two parameter processes of frequency multiplication and sum frequency. In this regard, previous related works include: [0003] Zhu Shining and others published an article in Science in 1997 on realizing the triple frequency of green light with a quasi-periodic Fibonacci optical superlattice. Using the two reciprocal lattice vectors of the LiTa03 superlattice of the quasi-periodic Fibonacci sequence compensates the phase mismatch of the 1570nm fun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/00H01S3/08H01S3/0941H01S3/109
Inventor 祝世宁胡晓朋李红霞徐平王惠田何京良朱永元闵乃本
Owner NANJING UNIV
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