CN1603979A - Holographic phasic difference amplifying and reconfiguration unit - Google Patents
Holographic phasic difference amplifying and reconfiguration unit Download PDFInfo
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- CN1603979A CN1603979A CN 200410084245 CN200410084245A CN1603979A CN 1603979 A CN1603979 A CN 1603979A CN 200410084245 CN200410084245 CN 200410084245 CN 200410084245 A CN200410084245 A CN 200410084245A CN 1603979 A CN1603979 A CN 1603979A
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Abstract
It is a holograph phase difference amplifying and recreation device, which comprises laser source. It locates a telescope along the light path of the laser source. The laser beam shoots the front semi-reflection and semi-transparent lens after hole enlarging and then is cut into beam an and reflection beam B. The beam an and beam B shoots on the amplified holograph after first reflection and third reflection. The holograph is diffracted and recorded on the dry plate. The said holograph is laid on the holograph rack.
Description
Technical field
The present invention relates to holographic phase difference and amplify, particularly a kind of holographic phase difference amplifying restructuring device, it can be widely used in the detection of various optical wave-fronts, optical element.
Background technology
At present, in optical precision processing and fields of measurement, generally adopt interferometric method to measure the optical element corrugated both at home and abroad, can survey precision is λ/30～λ/60 (λ is a wavelength), and actual needs reaches λ/100, can not satisfy the demand far away; On the other hand, domestic nearly all high-quality interferometer is all from external import, and its price does not wait between 450,000 dollars～1,000,000 dollars, and this has seriously restricted China's industry, national defence and development and national economy.No matter, still aspect indirect application such as theory demonstration, all be badly in need of a kind of technology and equipment of measuring optical corrugated of high-precision heavy-caliber in direct application such as industry, national defence, production.
The high power holographic phase difference amplifying device that the inventor Gao Hongyi of Shanghai Optics and Precision Mechanics institute, Chinese Academy of Sciences, Chen Jianwen, Xie Honglan, Xu Zhizhan etc. are provided, see " high power holographic phase difference amplifying device ", number of patent application: 03115177.9, as shown in Figure 1, 2, it is made up of two parts: first is a hologram recording apparatus, and principle as shown in Figure 1; Second portion is the reconstruct multiplying arrangement, as shown in Figure 2.
First's pen recorder mainly is made up of LASER Light Source 1, telescope 2, beam splitter 3, catoptron 5,6,7, testing sample 4 and recording medium 8; The second portion multiplying arrangement mainly is made up of helium-Ne laser light source 1, beam expanding telescope 2, semi-transparent semi-reflecting lens 9,12, total reflective mirror 10,11, negative rack 13, lens 14, diaphragm 15 and receiver 16.
When behind the good hologram of device photographs as shown in Figure 1, holographic dry plate 8 is handled, dried up through dark place, be placed on then on the negative rack 13 as shown in Figure 2 and carry out optics phasic difference amplification and reconstruct.
Phasic difference is amplified by your interferometer of optics Mach-Chen Te and is undertaken, and principle as shown in Figure 2.You contain helium-Ne laser light source 1, semi-transparent semi-reflecting lens 9,12, total reflective mirror 10,11, negative rack 13, lens 14, diaphragm 15 and receiver 16 by interferometer Mach-Chen Te.
By output wavelength is helium-Ne laser light source 1 emitted light beams of 632.8nm, behind first semi-transparent semi-reflecting lens 9, is divided into A, B two-beam.Light beam A behind the total reflective mirror 11 and second semi-transparent semi-reflecting lens 12, the hologram of illumination on the dry plate 8; Light beam B behind total reflective mirror 10 and semi-transparent semi-reflecting lens 12, the hologram on the dry plate 8 that also throws light on.
Light beam A, light beam B is respectively by the hologram diffraction, produce 0 grade separately, ± 1, ± M, ± N ... order diffraction, adjust completely reflecting mirror 10 respectively, 11, allow light beam A produce on the hologram 8+M level (or-N level) diffracted wave and light beam B produce on hologram 8-N order diffraction ripple, overlapping on the focal plane of lens 14, use the non-overlapped part of diaphragm 15 eliminations again, because from the object wave of reconstruct on the hologram 8 and its ripple of gripping altogether is that the position is mutually opposite, be light beam A produce+M order diffraction ripple and light beam B produce-stack of N order diffraction ripple after, to produce interference, phasic difference is amplified to original (M+N) doubly, and it is inferior to repeat said process n (positive integer), and then phasic difference amplifies 2
M+NDoubly.
The weak point of this high power holographic phase difference amplifying device is, when the phasic difference enlargement factor progressively increased, angle of diffraction progressively became greatly, and lens 11 and semi-transparent semi-reflecting lens 9 bores are required also increasing, for example enlargement factor is 8 o'clock, and the diameter of lens 11 and semi-transparent semi-reflecting lens 9 will be at φ about 100.
Summary of the invention
For overcoming the deficiency of technology formerly, the present invention proposes holographic phase difference amplifying restructuring device, this device should be simple in structure, and along with the increase of enlargement factor, the increase of angle of diffraction will no longer be subjected to the restriction of semi-transparent semi-reflecting lens and lens optics thereto size among Fig. 2.
Technical solution of the present invention is as follows:
A kind of holographic phase difference amplifying restructuring device, comprise LASER Light Source, along on the light path of this LASER Light Source output a telescope being set, laser beam by reaming after, incide the light beam A and the beam reflected B that are divided into transmission on the half-reflecting half mirror in the place ahead, it is characterized in that first total reflective mirror in addition, second total reflective mirror, the 3rd total reflective mirror and hologram to be amplified, the support of hologram and record dry plate, light beam A is after the reflection of first total reflective mirror and the 3rd total reflective mirror, shine hologram to be amplified, be recorded on the record dry plate after being waited to amplify the hologram diffraction, light beam B is after the reflection of second total reflective mirror, shine hologram to be amplified, quilt is recorded on the record dry plate after being waited to amplify the hologram diffraction, and described hologram to be amplified places on the described hologram support.
Described LASER Light Source is the He-Ne laser instrument of a single mode running, and output power is 5mW.
Described telescope is a beam-expanding system that amplifies 100 times, and it is that the light beam of 1mm is expanded into the light beam that diameter is 100mm that its function is diameter.
Described half-reflecting half mirror is that a reflectivity and transmissivity respectively are 50% wedge plate, and the light that is used for coming out from telescope is divided into two.
Described first total reflective mirror, second total reflective mirror and the 3rd total reflective mirror all are the deielectric-coating mirrors that 6328 had 100% reflectivity.
Fast hologram to be amplified is one and contains phase information, takes successful hologram with device shown in Figure 1; The hologram support can be used for adjusting the support of hologram two-dimensional directional; The record dry plate is the commercially available high resolving power dry plate to 6328 spectrum sensitivities.
Technique effect of the present invention is as follows:
Light beam A, light beam B are respectively by the hologram diffraction, produce separately 0 grade, ± 1, ± M, ± N ... order diffraction, adjust first total reflective mirror and the 3rd total reflective mirror respectively, allow light beam A wait to amplify produce on the hologram+M level (or-N level) diffracted wave and light beam B waiting to amplify produce on the hologram-N order diffraction ripple, with the non-overlapped part of diaphragm elimination, again by the record photographic plate recording.Because the ripple of gripping altogether from the object wave of waiting to amplify reconstruct on the hologram and it is that the position is mutually opposite, therefore, light beam A produces+M order diffraction ripple and light beam B produce-wave interference of N order diffraction after, phasic difference is amplified to original (M+N) times.If it is inferior to repeat said process n (positive integer), then phasic difference is amplified (M+N) n doubly.When M=N=5, repeat one time process, promptly n=2 just can amplify phasic difference 100 times.
Compare with technology formerly, holographic phase difference amplifying restructuring device of the present invention, owing to adopt classical Mach-Chen Te that interferometer, and lens have been removed, be not subjected to the not only simple in structure of semi-transparent semi-reflecting lens yet, prior this device can any order of diffraction of reconstruct time hologram, we can say that this is a quantum leap.
Description of drawings
Fig. 1 is for being used for the installation drawing of recorded hologram in the technology formerly.
Fig. 2 is for being used for reconstruct holographic phase difference amplifying device index path in the technology formerly.
Fig. 3 is a holographic phase difference amplifying restructuring device index path of the present invention.
Embodiment
Holographic phase difference amplifying restructuring device index path of the present invention as shown in Figure 3, as seen from the figure, holographic phase difference amplifying restructuring device of the present invention, comprise LASER Light Source 1, along on the light path of this LASER Light Source 1 output a telescope 2 being set, laser beam by reaming after, incide the light beam A and the beam reflected B that are divided into transmission on the half-reflecting half mirror 3 in the place ahead, it is characterized in that first total reflective mirror 4 in addition, second total reflective mirror 6, the 3rd total reflective mirror 9 and wait to amplify hologram 8, the support 10 of hologram and record dry plate 13, light beam A is after the reflection of first total reflective mirror 4 and the 3rd total reflective mirror 9, irradiation waits to amplify hologram 8, be recorded on the record dry plate 13 after being waited to amplify hologram 8 diffraction, light beam B is after the reflection of second total reflective mirror 6, irradiation waits to amplify hologram 8, is recorded on the record dry plate 13 after being waited to amplify hologram 8 diffraction, describedly waits to amplify hologram 8 and places on the described hologram support 10.
Described LASER Light Source 1 is the He-Ne laser instrument of a single mode running, and output power is 5mW.
Described telescope 2 is beam-expanding systems that amplify 100 times, and it is that the light beam of 1mm is expanded into the light beam that diameter is 100mm that its function is diameter.
Described half-reflecting half mirror 3 is that a reflectivity and transmissivity respectively are 50% wedge plate, and the light that is used for coming out from telescope is divided into two.
Said half-reflecting half mirror 3 is that a reflectivity is 50% wedge plate, and the light that is used for coming out from telescope is divided into two.Hologram 8 is one and contains phase information, takes successful hologram with device shown in Figure 1; Hologram support 10 can be used for adjusting the support of hologram two-dimensional directional; Record dry plate 13 is the commercially available high resolving power dry plates to 6328 spectrum sensitivities.
Principle of work of the present invention and basic process are:
By output wavelength is helium-Ne laser light source 1 emitted light beams of 632.8nm, behind semi-transparent semi-reflecting lens 3, is divided into light beam A and light beam B.Light beam A is behind second total reflective mirror 6, and illumination waits to amplify hologram 8; Light beam B behind first total reflective mirror 4 and the 3rd total reflective mirror 9, also the illumination on hologram 8.
Light beam A and light beam B bundle are respectively by hologram 8 diffraction, produce separately 0 grade, ± 1, ± M, ± N ... order diffraction, adjust first total reflective mirror 4 and second total reflective mirror 6 respectively, allow light beam A produce on the hologram 8+M level (or-N level) diffracted wave and light beam B produce on hologram 8-N order diffraction ripple, again by writing down dry plate 13 records.Because from the object wave of reconstruct on the hologram 8 and its ripple of gripping altogether is that the position is mutually opposite, therefore, the A bundle produces+M order diffraction ripple and B bundle produce-wave interference of N order diffraction after, phasic difference is amplified to original (M+N) times.If repeat said process n time, then (M+N) amplified in phasic difference
nDoubly.When M=N=5, repeat one time process, promptly n=2 just can be amplified to phasic difference 100 times.
Claims (4)
1, a kind of holographic phase difference amplifying restructuring device, comprise LASER Light Source (1), along on the light path of this LASER Light Source (1) output a telescope (2) being set, laser beam by reaming after, incide the light beam A and the beam reflected B that are divided into transmission on the half-reflecting half mirror (3) in the place ahead, it is characterized in that first total reflective mirror (4) in addition, second total reflective mirror (6), the 3rd total reflective mirror (9) and hologram to be amplified (8), support of hologram (10) and record dry plate (13), light beam A is after the reflection of first total reflective mirror (4) and the 3rd total reflective mirror (9), shine hologram to be amplified (8), be recorded in behind hologram to be amplified (8) diffraction on the record dry plate (13), light beam B is after the reflection of second total reflective mirror (6), shine hologram to be amplified (8), be recorded on the record dry plate (13) behind hologram to be amplified (8) diffraction, described hologram to be amplified (8) places on the described hologram support (10).
2, holographic phase difference amplifying restructuring device according to claim 1 is characterized in that described LASER Light Source (1) is the He-Ne laser instrument of a single mode running, and output power is 5mW.
3, holographic phase difference amplifying restructuring device according to claim 1 is characterized in that described telescope (2) is a beam-expanding system that amplifies 100 times, and it is that the light beam of 1mm is expanded into the light beam that diameter is 100mm that its function is diameter.
4, holographic phase difference amplifying restructuring device according to claim 1 is characterized in that described half-reflecting half mirror (3) is that a reflectivity and transmissivity respectively are 50% wedge plate, and the light that is used for coming out from telescope is divided into two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100842453A CN100373270C (en) | 2004-11-17 | 2004-11-17 | Holographic phasic difference amplifying and reconfiguration unit |
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| CNB2004100842453A CN100373270C (en) | 2004-11-17 | 2004-11-17 | Holographic phasic difference amplifying and reconfiguration unit |
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| CN1603979A true CN1603979A (en) | 2005-04-06 |
| CN100373270C CN100373270C (en) | 2008-03-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313847C (en) * | 2005-09-28 | 2007-05-02 | 中国科学院上海光学精密机械研究所 | Holographic phase difference amplifying restructuring device based on sagnac interferometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU172499B (en) * | 1976-05-31 | 1978-09-28 | Mta Koezponti Fiz Kutato Intez | Method and apparatus for checking photomasks by substractive method |
| RU1805285C (en) * | 1988-11-23 | 1993-03-30 | Физико-технический институт им.А.Ф.Иоффе | Method for determining thermal and elastic parameters of solid materials |
| CN1186590C (en) * | 2003-01-27 | 2005-01-26 | 中国科学院上海光学精密机械研究所 | High power holographic phase difference amplifying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313847C (en) * | 2005-09-28 | 2007-05-02 | 中国科学院上海光学精密机械研究所 | Holographic phase difference amplifying restructuring device based on sagnac interferometer |
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