An optical system suitable for three-dimensional two-photon fluorescence storage
A two-photon fluorescence and optical path system technology, applied in the field of optical information storage, can solve the problems of large light energy loss, cumbersome structure, complex system, etc., and achieve the effect of small light energy loss and simple structure
Active Publication Date: 2014-10-29
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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[0004] The above-mentioned optical path system uses two lasers with different wavelengths, which need to be controlled separately, and the system is complicated; moreover, multiple beam splitters, quarter-wave plates and other components are used, the structure is cumbersome, and the loss of light energy is large
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[0022] The present invention will be further described in detail below through embodiments in conjunction with the accompanying drawings.
[0023] see figure 2 , in one embodiment, an optical path system suitable for three-dimensional two-photon fluorescence storage includes a laser 201, a servo signal detection module, a data signal detection module, and a path from the laser 201 to a storage material 207 such as an optical disc A collimator lens 202 , a diffractive optical element 203 , a spectroscopic optical element 204 , a dichroic plate 205 and an objective lens 206 are arranged in sequence. The diffractive optical element 203 is used to convert the laser beam collimated by the collimating lens 202 into a 0th-order laser beam sent to the reflective layer of the storage material and a 1st-order laser beam sent to the data layer of the storage material, and the spectroscopic optical element 204 is used for Transmitting laser light from the diffractive optical element 203...
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Abstract
The invention discloses a light path system applicable to three-dimensional two-photon fluorescence storage. The light path system comprises a laser, a servo signal detection module, a data signal detection module, a collimating lens, a diffraction optical element, a beam splitting optical element, a dichroic sheet and an objective lens, wherein the diffraction optical element is used for converting the collimated laser into zero-order laser sent to a storage material reflection layer and one-order laser sent to a storage material data layer, the beam splitting optical element is used for transmitting the laser from the diffraction optical element and the laser from the storage material reflection layer, the dichroic sheet is used for transmitting the laser and reflecting the fluorescence, the servo signal detection module is arranged a reflection path of the beam splitting element for reflecting the laser from the storage material reflecting layer, and the data signal detection module is arranged on a reflection path of the dichroic sheet for reflecting the fluorescence excited by the storage material reflecting layer. The light path system has the advantages that the structure is simple and compact, and in addition, the light energy loss is less.
Description
technical field [0001] The invention relates to the technical field of optical information storage, in particular to an optical path system suitable for three-dimensional two-photon fluorescence storage. Background technique [0002] With the widespread popularization and in-depth development of the Internet, the amount of calculation and storage of various information is increasing exponentially. As an important means of information storage, optical information storage has been undergoing continuous technological innovation in order to expand its capacity. The three-dimensional two-photon fluorescence storage technology developed in recent years, the volume storage density can reach , and the two-photon storage recording points are small, and the surface storage density is also increased, which can greatly increase the number of storage layers and surface capacity of the optical disc, greatly increase the data storage capacity, and the data storage time with optical stora...
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IPC IPC(8): G11B7/135G11B7/127G11B7/1353G11B7/13
Inventor 程雪岷侯鉴玻侯欣楠杜柯马建设
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV