CN105449511B - Inject frequency multiplied solid laser in latch well - Google Patents

Inject frequency multiplied solid laser in latch well Download PDF

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Publication number
CN105449511B
CN105449511B CN201610005589.3A CN201610005589A CN105449511B CN 105449511 B CN105449511 B CN 105449511B CN 201610005589 A CN201610005589 A CN 201610005589A CN 105449511 B CN105449511 B CN 105449511B
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China
Prior art keywords
mirror
seed
light
frequency
input coupling
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CN105449511A (en
Inventor
李文杰
徐震
孙剑芳
赵儒臣
付小虎
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Precilasers Co ltd
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Shanghai Institute of Optics and Fine Mechanics of CAS
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/108Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
    • H01S3/109Frequency multiplication, e.g. harmonic generation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/11Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1106Mode locking

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lasers (AREA)

Abstract

Frequency multiplied solid laser in a kind of injection latch well, including pumping source, convex lens, annular chamber, seed laser, phase-modulation optical heterodyne frequency stabilization system and Amici prism, the present invention has the characteristics that of simple structure and low cost, can generate the adjustable double-frequency laser output of high power, narrow linewidth, frequency.

Description

Inject frequency multiplied solid laser in latch well
Technical field
The present invention relates to laser, frequency multiplied solid laser in especially a kind of injection latch well.
Background technology
General solid state laser to generate single-mode beams must intracavitary be inserted into the optical elements such as birefringent plate, etalon into Row model selection.Optical element is inserted into increase noise, increase loss, improve threshold value, reduce Slop efficiency.But it injects It is that faint seed laser is injected into powerful laser that lock-in techniques, which can overcome these disadvantages, injection locking technique, In, generate narrow linewidth, single mode, the output of high-power laser.Since additional frequency-selecting element need not be added, improve sharp The output performance of photosystem.Injection locked laser has had in application fields such as laser radar, interferometer, laser measurements important Application.Currently, injection locked laser be pulse laser mostly, can generate continuously, the laser of narrow linewidth it is less;Injection The seed laser (wavelength is λ 1) of locking low-power, injection locking laser crystal, (wavelength λ under the action of pump light 2), generation wavelength is the narrow linewidth of λ 1, single mode, high-power laser export.Generally there are two types of mode, intracavity frequency doubling and chambers for frequency multiplication Outer frequency multiplication, two ways respectively have advantage and disadvantage, and cavity external frequency multiplication technical stability is preferable, but shg efficiency is relatively low, intracavity frequency doubling with It is opposite.
Invention content
The main purpose of the present invention is to provide frequency multiplied solid laser in a kind of injection latch well, the present invention has structure Simply, feature of low cost can generate the adjustable double-frequency laser output of high power, narrow linewidth, frequency.
Technical solution of the invention is as follows:
Frequency multiplied solid laser in a kind of injection latch well, including pumping source, convex lens, annular chamber, seed laser, phase Position modulation optical heterodyne frequency stabilization system and Amici prism, the annular chamber include pump light Input coupling mirror, laser crystal, first Concave mirror, optoisolator, plane mirror, seed light Input coupling mirror, output coupling mirror, frequency-doubling crystal and the second concave mirror;
The seed light direction exported along the seed laser is seed light Input coupling mirror, pump light input coupling successively Close mirror, laser crystal, the first concave mirror, optoisolator, plane mirror, the second concave mirror, frequency-doubling crystal, output coupling mirror and Seed light Input coupling mirror constitutes annular chamber,
The pump direction exported along the pumping source is the convex lens, Input coupling mirror successively;
It is the Amici prism in the reflection light direction of the seed light Input coupling mirror, in the Amici prism The reflected beams direction be connected with the input terminal of the phase-modulation optical heterodyne frequency stabilization system by optical fiber, the phase modulated light The piezoelectric ceramics of the output end of heterodyne frequency stabilization system is sticked at the back side of the plane mirror;
The pump light Input coupling mirror is coated with high to pump light saturating, the high anti-film of seed light;First concave mirror To be coated with to the high anti-film of seed light, to the high saturating film of pump light;The plane mirror be coated with it is high anti-to seed light, to pump The high saturating film of Pu light;The seed light Input coupling mirror is plane mirror, is coated with the film to seed light fractional transmission;Described Two concave mirror mirrors are coated with to the high anti-film of seed light;The output coupling mirror is concave mirror, is coated with and opposes to the height of seed light The high saturating film of frequency doubled light.
The seed laser is low-power narrow line width regulatable laser.
The technique effect of the present invention:
The present invention for the first time carries out injection locking and intracavity frequency doubling in an intracavitary.Injection locking generate laser directly into Row intracavity frequency doubling.Tradition injection locking and intracavity frequency doubling are carried out in two intracavitary, after laser injection locking outside output cavity, then are coupled Into frequency doubling cavity, 9 pieces of hysteroscopes are at least needed, and the present invention is to complete only to need 6 pieces of hysteroscopes in an intracavitary, reduces cost, subtracts It is lost caused by having lacked hysteroscope, efficiency at least improves 10%, reduces difficulty.It is steady due to adding phase-modulation optical heterodyne Display system keeps seed light and annular chamber resonance, increases the intracavity power of seed light.The system laser tuning performance depends on kind Sub-light performance can overcome the disadvantage that solid state laser tuning range is narrow, tuning is troublesome.
Description of the drawings
Fig. 1 is the structural schematic diagram of frequency multiplied solid laser in present invention injection latch well.
Specific implementation mode
For ease of to the present invention structure and the effect that reaches have further understanding, now coordinate attached drawing to develop simultaneously preferable implementation Detailed description are as follows for example:
As shown in Figure 1, as seen from the figure, the present invention injects frequency multiplied solid laser in latch well, including pumping source 1, convex lens 2 annular chamber 3 of mirror, seed laser 4, phase-modulation optical heterodyne frequency stabilization system 5 and Amici prism 6, the annular chamber 3 include pump Pu light Input coupling mirror 30, laser crystal 31, the first concave mirror 32, optoisolator 33, plane mirror 34, seed light input coupling Close mirror 35, output coupling mirror 36, frequency-doubling crystal 37, the second concave mirror 38;
The seed light direction exported along seed laser 4 is seed light Input coupling mirror 35, pump light input coupling successively Mirror 30, laser crystal 31, the first concave mirror 32, optoisolator 33, plane mirror 34, the second concave mirror 38, frequency-doubling crystal 37, Output coupling mirror 36 and seed light Input coupling mirror 35 constitute annular chamber 3;
The pump direction exported along the pumping source 1 is the convex lens 2, Input coupling mirror 30 successively;
It is the Amici prism 6 in the reflection light direction of the seed light Input coupling mirror 35, in the light splitting The reflected beams direction of prism 6 is connected by optical fiber with the input terminal of the phase-modulation optical heterodyne frequency stabilization system 5, the phase The piezoelectric ceramics of the output end of modulation optical heterodyne frequency stabilization system 5 is sticked at the back side of the plane mirror 34;
The pump light Input coupling mirror 30 is coated with the high anti-film of seed light thoroughly high to pump light;First concave mirror 32 be to be coated with to the high anti-film of seed light, the film saturating to pump light height;The plane mirror 34 be coated with it is high anti-to seed light, To the high saturating film of pump light;The seed light Input coupling mirror 35 is plane mirror, is coated with the film to seed light fractional transmission;Institute The the second concave mirror mirror 38 stated is coated with to the high anti-film of seed light;The output coupling mirror 36 is concave mirror, is coated with to seed The high of light opposes the high saturating film of frequency doubled light.
Here, which is the embodiment of the present invention, a related parameter:
The pump light (wavelength X 2) that pumping source 1 is sent out passes through convex lens 2, pump light Input coupling mirror 30, enters to inject successively Laser crystal 31;The seed light (wavelength is λ 1) for the low-power that the seed laser 4 is sent out passes through the seed successively In light Input coupling mirror 35, pump light Input coupling mirror 30 to laser crystal 31, under the action of pump light, the laser is brilliant Body 31 generates high-power laser output (wavelength is λ 1), which passes through the first concave mirror 32, optoisolator 33, puts down successively Face speculum 34, the second concave mirror 38, the frequency multiplication in the frequency-doubling crystal 37, times of 37 output wavelength λ 1/2 of the frequency-doubling crystal Frequency light, by 36 output cavity of output coupling mirror outside, after frequency-doubling crystal remaining wavelength be λ 1 light pass through the output coupling It closes the reflection of mirror 36, the transmission of seed light Input coupling mirror 35 and the seed light that seed laser is sent out and passes through seed light Input coupling mirror Enter the phase-modulation optical heterodyne frequency stabilization system 5 after 35 reflecting interferences;The piezoelectric ceramics control plane Speculum 34 generates movement and realizes frequency stabilization.
It is of simple structure and low cost that experiment shows that the present invention has the characteristics that, can generate high power, narrow linewidth, frequency can The double-frequency laser of tune exports.

Claims (1)

1. frequency multiplied solid laser in a kind of injection latch well, including pumping source (1), convex lens (2), annular chamber (3), seed swash Light device (4), phase-modulation optical heterodyne frequency stabilization system (5) and Amici prism (6), the annular chamber (3) include pump light input Coupling mirror (30), laser crystal (31), the first concave mirror (32), optoisolator (33), plane mirror (34), seed light input Coupling mirror (35), output coupling mirror (36), frequency-doubling crystal (37), the second concave mirror (38);
The seed light direction exported along seed laser (4) is seed light Input coupling mirror (35), pump light input coupling successively Mirror (30), laser crystal (31), the first concave mirror (32), optoisolator (33), plane mirror (34), the second concave mirror (38), frequency-doubling crystal (37), output coupling mirror (36) and seed light Input coupling mirror (35) constitute annular chamber (3);
The pump direction exported along the pumping source (1) is the convex lens (2), pump light Input coupling mirror successively (30);
It is the Amici prism (6) in the reflection light direction of the seed light Input coupling mirror (35), in the light splitting The reflected beams direction of prism (6) is connected by optical fiber with the input terminal of the phase-modulation optical heterodyne frequency stabilization system (5), should The piezoelectric ceramics of the output end of phase-modulation optical heterodyne frequency stabilization system (5) is sticked at the back side of the plane mirror (34);
The pump light Input coupling mirror (30) is coated with the high anti-film of seed light thoroughly high to pump light;First concave mirror (32) it is to be coated with to the high anti-film of seed light, the film saturating to pump light height;The plane mirror (34) is coated with to seed light High anti-, saturating to pump light height film;The seed light Input coupling mirror (35) is plane mirror, is coated with to seed light fractional transmission Film;Second concave mirror (38) is coated with to the high anti-film of seed light;The output coupling mirror (36) is concave mirror, plating Have and the high saturating film of frequency doubled light is opposed to seed light.
CN201610005589.3A 2016-01-05 2016-01-05 Inject frequency multiplied solid laser in latch well Active CN105449511B (en)

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CN105449511B true CN105449511B (en) 2018-10-02

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EP3502757B1 (en) 2017-12-22 2024-08-28 IMEC vzw Integrated photonic device for modulating the phase of a light signal
CN109239009A (en) * 2018-09-03 2019-01-18 杭州电子科技大学 Gaseous mercury concentration detection apparatus and method based on ring resonator frequency multiplication structure

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US6483858B1 (en) * 1999-11-23 2002-11-19 Southeastern University Research Assn. Injection mode-locking Ti-sapphire laser system
GB2487437A (en) * 2011-01-24 2012-07-25 Univ Southampton A first resonant optical fiber cavity and an second resonant enhancement cavity arranged in the first cavity.
CN104466651A (en) * 2014-12-02 2015-03-25 中国电子科技集团公司第四十一研究所 Annular integrated laser frequency doubling device
CN104600552B (en) * 2015-02-04 2017-11-24 厦门大学 A kind of single-crystal diamond continuous wave tunable deep ultraviolet lasers

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Effective date of registration: 20191211

Address after: 315221 floor 2, block C, No.123, Zhenning West Road, Zhenhai District, Ningbo City, Zhejiang Province

Patentee after: Ningbo frequency quasi Laser Technology Co.,Ltd.

Address before: 800-211 201800 post office box, Shanghai, Shanghai, Jiading District

Patentee before: SHANGHAI INSTITUTE OF OPTICS AND FINE MECHANICS CHINESE ACADEMY OF SCIENCES

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Effective date of registration: 20230707

Address after: 201800 Area D, Floor 2, Building 2, No. 1918, Xupan Road, Xuxing Town, Jiading District, Shanghai

Patentee after: PRECILASERS Co.,Ltd.

Address before: Floor 2, Building C, 123 Zhenning West Road, Zhenhai District, Ningbo City, Zhejiang Province, 315221

Patentee before: Ningbo frequency quasi Laser Technology Co.,Ltd.

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