CN1632994A - A phase-lock laser frequency stabilization method - Google Patents
A phase-lock laser frequency stabilization method Download PDFInfo
- Publication number
- CN1632994A CN1632994A CN 200410061097 CN200410061097A CN1632994A CN 1632994 A CN1632994 A CN 1632994A CN 200410061097 CN200410061097 CN 200410061097 CN 200410061097 A CN200410061097 A CN 200410061097A CN 1632994 A CN1632994 A CN 1632994A
- Authority
- CN
- China
- Prior art keywords
- frequency
- laser
- signal
- phase
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
This invention discloses a phase-locking laser frequency stabilizing method realized by a phase-locking laser frequency stabilizing device composed of a tunable laser, a beam splitter, a frequency stabilized primary standard source, a photoelectric detector, a modulated signal source, a phase-sensitive wave detector and a tunable drive, characterizing in applying the modulated signal output by its source onto the frequency stabilized primary standard source to lock the laser frequency on a target frequency point the output laser has no frequency shift.
Description
Technical field:
The present invention relates to laser frequency stabilization, particularly a kind of phase-locked laser frequency stabilization.
Background technology:
Present laser frequency stabiliz ation method can be divided into difference frequency stabilization and phase locking frequency stabilized.
The method of difference frequency stabilization is: allow the output frequency of laser be positioned on the slope of frequency stabilization a reference source (absworption peak slope, transmission peaks slope etc.), tell two bundles from output laser, wherein beam of laser obtains the shoot laser intensity I through frequency stabilization a reference source frequency discrimination
1, the intensity I of regulating another Shu Jiguang
2, make it near I
1, with I
1And I
2Difference as error signal, the output frequency of negative feedback locked laser.The advantage of difference frequency stabilization is: do not have the additional modulation of laser frequency and intensity, its weak point is: frequency stabilization circuit is in the DC operation state, and the point of safes of frequency drifts about easily.
The method of phase locking frequency stabilized is: the output light of tunable laser is told a part through beam splitter be input to frequency stabilization a reference source; The sinewave modulation signal of modulating signal source output is applied to the tune driver of laser, and photodetector receives and sends the light signal of (or transmission) from frequency stabilization a reference source; With modulating signal source output with modulation signal with the square-wave signal of homophase frequently, together be input to phase-sensitive detector with the signal that obtains on the photodetector; , through tune driver tunable laser is carried out negative feedback and regulate control as error signal with the output voltage of phase-sensitive detector, make output laser be locked on the target frequency point.The advantage of phase locking frequency stabilized is: can make on the rift-free peak point that is locked in frequency stabilization a reference source in frequency center, its weak point is: the introducing of modulation makes laser frequency produce additional modulation, simultaneously also usually with the additional modulation of laser intensity.
In a word, existing frequency-stabilizing method can't both not had frequency and intensity additional modulation, rift-free again laser frequency stabilization effect.
Summary of the invention:
The objective of the invention is: a kind of phase-locked laser frequency stabiliz ation method is provided, this frequency-stabilizing method is that modulation signal is applied on the frequency stabilization a reference source, rather than be applied on the tune driver of laser, laser is not modulated, make output laser not have the additional modulation of frequency and intensity; Because the peak value that adopts modulating signal source as frequency reference, makes output laser not have frequency drift.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of phase-locked laser frequency stabiliz ation method: with beam splitter the output light of tunable laser is divided into two bundles, transmitted light is directly exported, and reverberation is input to frequency stabilization a reference source; The modulating signal source output amplitude is that A, frequency are f
TSinewave modulation signal be applied on the frequency stabilization a reference source, make the crest frequency of frequency stabilization a reference source put v at target frequency
0Left and right sides v
-And v
+Between the vibration, the illumination that frequency stabilization a reference source is sent (or transmission) is mapped to photodetector, photodetector will obtain frequency or the different signal of phase place with modulation signal; With modulating signal source output with modulation signal with the square-wave signal of homophase frequently, together be input to phase-sensitive detector with the signal that obtains on the photodetector; If laser frequency v just in time equals v
0, then the phase-sensitive detector output voltage is zero; If laser frequency v is partial to v
-, then the phase-sensitive detector output voltage is less than zero; If laser frequency v is partial to v
+, then the phase-sensitive detector output voltage is greater than zero,, through tune driver tunable laser carried out negative feedback and regulates control as error signal with the output voltage of phase-sensitive detector, makes output laser be locked in v
0Frequency point on.
Advantage of the present invention and effect: the present invention makes the laser frequency and the intensity of laser output not only not have drift but also do not have additional modulation.
Description of drawings:
Fig. 1 is a kind of structural representation of phase-locked laser frequency stabilization device.
Wherein: 1 tunable laser, 2 beam splitters, 3 frequency stabilization a reference sources, 4 photodetectors, 5 modulating signal sources, 8 phase-sensitive detectors, 9 tune driver.
Phase sensitive detection schematic diagram when Fig. 2 laser is in different frequency point.
Phase sensitive detection schematic diagram when Fig. 2 a laser is in target frequency point;
Phase sensitive detection schematic diagram when Fig. 2 b laser is lower than target frequency point slightly;
The phase sensitive detection schematic diagram of Fig. 2 c laser during far below target frequency point;
Phase sensitive detection schematic diagram when Fig. 2 d laser is slightly higher than target frequency point;
The phase sensitive detection schematic diagram of Fig. 2 e laser during far above target frequency point.
Wherein: 10 modulation signals, 11 frequency stabilization a reference source curves, the signal when 12 laser frequencies are positioned at target frequency point on the detector, the signal when 13 laser frequencies are lower than target frequency slightly on the detector, 14 laser frequencies are the signal on the detector when signal on the detector, the signal when 15 laser frequencies are slightly higher than target frequency on the detector, 16 laser frequencies are far above target frequency during far below target frequency.
Fig. 3 is the relation of frequency stabilization a reference source curve and error signal.
Wherein: 17 frequency error curves.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing:
Structure of the present invention is: as shown in Figure 1, on the output light path of tunable laser 1, place beam splitter 2, coaxial in order placement frequency stabilization a reference source 3 and photodetector 4 on the reflected light path of beam splitter 2, the output signal of telecommunication of photodetector 4 is delivered to phase-sensitive detector 8; The sine wave signal of modulating signal source 5 outputs is applied on the frequency stabilization a reference source 3; The square-wave signal of modulating signal source 5 outputs is delivered to phase-sensitive detector 8, and the error signal of phase-sensitive detector 8 outputs is delivered to tune driver 9, and the output signal of tune driver 9 is applied to tunable laser 1.
Describe the course of work of the present invention below in conjunction with accompanying drawing, by Fig. 1, Fig. 2, Fig. 3 as can be known, with beam splitter 2 the output light of tunable laser 1 is divided into two bundles, transmitted light is directly exported, and reverberation is input to frequency stabilization a reference source 3; Modulating signal source 5 output amplitudes are that A, frequency are f
TSinewave modulation signal 10 be applied on the frequency stabilization a reference source 3; Frequency stabilization a reference source 3 is under the effect of modulation signal 10, and its crest frequency is put v at target frequency
0Left and right sides v
-And v
+Between the vibration, the illumination that frequency stabilization a reference source 3 is sent (or transmission) is mapped to photodetector 4.If laser frequency v just in time equals v
0, with picked up signal 12, signal 12 is two frequencys multiplication of modulation signal 10 on the photodetector 4; If laser frequency v is partial to v slightly
-, with picked up signal 13, signal 13 is two frequencys multiplication of modulation signal 10, and phase place is more leading than signal 12 on the photodetector 4; If laser frequency v is partial to v greatly
-, will obtain on the photodetector 4 and the signal 14 of modulation signal 10 with the frequency homophase; If laser frequency v is partial to v a little
+, with picked up signal 15, signal 15 is two frequencys multiplication of modulation signal 10 on the photodetector 4, and phase place lags behind than signal 12; If laser frequency v is partial to v greatly
+, will obtain signal 16 on the photodetector 4 with modulation signal 10 with same frequency and reversed-phase.With modulating signal source 5 output with modulation signal 10 with the square-wave signals of homophases frequently, together be input to phase-sensitive detector 8 together with picked up signal on the photodetector 4.When the signal on the photodetector 4 was 12, the phase-sensitive detector output voltage was zero; When the signal on the photodetector 4 was 13 or 14, the phase-sensitive detector output voltage was less than zero; When the signal on the photodetector 4 is 15 or 16, the phase-sensitive detector output voltage is greater than zero, obtain frequency error curve 17 shown in Figure 3 thus, regulate control signal as error according to this, carry out negative feedback through 9 pairs of tunable laser of tune driver 1 and regulate control, make the output laser frequency of tunable laser 1 be locked in target frequency point v
0The place is to reach the frequency stabilization purpose.
The frequency stabilization a reference source that adapts with the present invention: frequency stabilization a reference source 3 can be selected atom Zeemen effect device, Faraday effect device or have a reference source of the device (or system) of certain tunability as laser frequency stabilization by atom steam bubble and acousto-optic crystal combination components etc.If seek out bigger frequency stabilization frequency-tuning range, can also select to have warbled F-P etalon as the frequency stabilization reference source.
Claims (1)
1. phase-locked laser frequency stabiliz ation method is divided into two bundles with beam splitter (2) with the output light of tunable laser (1), and transmitted light is directly exported, and reverberation is input to frequency stabilization a reference source (3); Photodetector (4) receives from frequency stabilization a reference source (3) and sends or the light signal of transmission; The signal that the square-wave signal and the photodetector (4) of modulating signal source (5) output are gone up acquisition together is input to phase-sensitive detector (8); With the output voltage of phase-sensitive detector (8) as error signal, through tune driver (9) tunable laser (1) is carried out negative feedback and regulate control, make output laser be locked on the target frequency point, the target frequency point can be regulated by the output valve of regulating DC source (6), it is characterized in that the modulation signal of modulating signal source (5) output is applied on the frequency stabilization a reference source (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410061097 CN1285147C (en) | 2004-11-12 | 2004-11-12 | A phase-lock laser frequency stabilization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410061097 CN1285147C (en) | 2004-11-12 | 2004-11-12 | A phase-lock laser frequency stabilization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1632994A true CN1632994A (en) | 2005-06-29 |
| CN1285147C CN1285147C (en) | 2006-11-15 |
Family
ID=34846293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410061097 Expired - Fee Related CN1285147C (en) | 2004-11-12 | 2004-11-12 | A phase-lock laser frequency stabilization method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1285147C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346540C (en) * | 2005-11-16 | 2007-10-31 | 中国科学院武汉物理与数学研究所 | Atom and molecule frequency stabilized pulsed dye laser and its frequency stabilization method |
| CN1960087B (en) * | 2005-11-01 | 2012-01-18 | 纬创资通股份有限公司 | Method and system for stabilizing operation of laser sources |
| CN102706463A (en) * | 2012-06-18 | 2012-10-03 | 山西大学 | Method for locking interference phase difference of optical field and device |
| CN103915754A (en) * | 2014-04-08 | 2014-07-09 | 中国科学院武汉物理与数学研究所 | Double-edge frequency stabilized laser based on acousto-optic frequency shifting |
| CN105591271A (en) * | 2016-02-29 | 2016-05-18 | 中国科学院半导体研究所 | Narrow line width laser device capable of realizing wideband linear frequency modulation |
| CN107437722A (en) * | 2016-10-25 | 2017-12-05 | 中国科学院福建物质结构研究所 | A kind of modulation free frequency stabilization method and apparatus of semiconductor laser |
| CN109412010A (en) * | 2018-12-14 | 2019-03-01 | 陕西聚力思创通信科技有限公司 | A method of extending the laser frequency stabilizing system mean time between failures |
| US10826271B2 (en) | 2017-11-15 | 2020-11-03 | Teknologian Tutkimuskeskus Vtt Oy | Limited range source of electromagnetic radiation |
| CN112600070A (en) * | 2020-12-14 | 2021-04-02 | 北京航天控制仪器研究所 | Laser accurate frequency stabilization system and method for SERF magnetometer |
-
2004
- 2004-11-12 CN CN 200410061097 patent/CN1285147C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960087B (en) * | 2005-11-01 | 2012-01-18 | 纬创资通股份有限公司 | Method and system for stabilizing operation of laser sources |
| CN100346540C (en) * | 2005-11-16 | 2007-10-31 | 中国科学院武汉物理与数学研究所 | Atom and molecule frequency stabilized pulsed dye laser and its frequency stabilization method |
| CN102706463A (en) * | 2012-06-18 | 2012-10-03 | 山西大学 | Method for locking interference phase difference of optical field and device |
| CN103915754A (en) * | 2014-04-08 | 2014-07-09 | 中国科学院武汉物理与数学研究所 | Double-edge frequency stabilized laser based on acousto-optic frequency shifting |
| CN103915754B (en) * | 2014-04-08 | 2016-12-07 | 中国科学院武汉物理与数学研究所 | Dual edge frequency stabilized carbon dioxide laser based on acousto-optic frequency translation |
| CN105591271B (en) * | 2016-02-29 | 2018-07-10 | 中国科学院半导体研究所 | It can wide-band LFM narrow-linewidth laser device |
| CN105591271A (en) * | 2016-02-29 | 2016-05-18 | 中国科学院半导体研究所 | Narrow line width laser device capable of realizing wideband linear frequency modulation |
| CN107437722A (en) * | 2016-10-25 | 2017-12-05 | 中国科学院福建物质结构研究所 | A kind of modulation free frequency stabilization method and apparatus of semiconductor laser |
| CN107437722B (en) * | 2016-10-25 | 2023-03-28 | 中国科学院福建物质结构研究所 | Modulation-free frequency stabilization method and device for semiconductor laser |
| US10826271B2 (en) | 2017-11-15 | 2020-11-03 | Teknologian Tutkimuskeskus Vtt Oy | Limited range source of electromagnetic radiation |
| CN109412010A (en) * | 2018-12-14 | 2019-03-01 | 陕西聚力思创通信科技有限公司 | A method of extending the laser frequency stabilizing system mean time between failures |
| CN112600070A (en) * | 2020-12-14 | 2021-04-02 | 北京航天控制仪器研究所 | Laser accurate frequency stabilization system and method for SERF magnetometer |
| CN112600070B (en) * | 2020-12-14 | 2022-03-04 | 北京航天控制仪器研究所 | Laser accurate frequency stabilization system and method for SERF magnetometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1285147C (en) | 2006-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1285147C (en) | A phase-lock laser frequency stabilization method | |
| US8184355B2 (en) | Light modulation device | |
| CN110854663B (en) | Polarization spectrum frequency stabilization system for inhibiting frequency locking zero drift | |
| US20040161249A1 (en) | Optical transmitter | |
| CN103026289B (en) | Compensation method, optical modulation system, and optical demodulation system | |
| US5544183A (en) | Variable wavelength light source | |
| JPH10190106A (en) | System and method for controlling laser frequency and system and method for processing signal | |
| CN101630975A (en) | Method and device for controlling bias voltage of photomodulator | |
| CN2747756Y (en) | Phase-lock laser frequency stabilizer | |
| EP0732609A1 (en) | Setting operation point in optical modulation apparatus | |
| JP3231545B2 (en) | Optical frequency stabilizer | |
| US5383210A (en) | Optical phase locked loop circuit | |
| EP0505048A2 (en) | Optical FSK modulator | |
| US20030042407A1 (en) | Variable optical attenuator using wavelength locked loop tuning | |
| WO2002006769A2 (en) | Method for controlling fiber optic sensor scale factor | |
| GB2163286A (en) | Wavelength stabilisation and output power regulation of semiconductor light sources | |
| US7257332B2 (en) | Optical transmitter and its control method | |
| CN115102031A (en) | Device and method for adjusting output frequency of laser based on atomic transition | |
| KR100608908B1 (en) | Method and apparatus stabilizing an optimal bias voltage on carrier suppressed pulse generator | |
| CN114221206B (en) | Laser frequency stabilization and shift system and laser | |
| CA1101923A (en) | Injection laser operation | |
| CN113851919B (en) | Sweep frequency electric signal generation system | |
| KR101001621B1 (en) | Apparatus and method for transforming Polarization | |
| SU1136632A1 (en) | Device for controlling electrical optical modulator operation | |
| JP2004301965A (en) | Bias controlling device of optical modulator and optical modulation device using bias controlling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |