Frequency Stabilization of Pulsed Injection-Seeded OPO Based on Optical Heterodyne Technique

Chen, Xiao; Zhu, Xiaolei; Li, Shiguang; Ma, Xiuhua; Xie, Wei; Liu, Ji-Qiao; Chen, Weibiao; Zhu, Rihong

doi:10.1088/0256-307x/35/2/024201

Cited by 10 publications

(4 citation statements)

References 15 publications

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“…The position of M3 can be changed slightly by PZT so that the OPO cavity length and the seeder laser frequency can be matched stably. The frequency fluctuation of the frequency-stabilized OPO is 0.29 MHz (RMS), with the Allan deviation being less than 20 kHz for an averaging time of more than 3 s [19]. The results meet the experimental requirements of IPDA LIDAR with pulsed laser frequency stability less than 0.3 MHz (RMS).…”

Section: Ipda Lidar Instrument and Principlesupporting

confidence: 64%

“…At the same time, high frequency stability can be achieved. Thirdly, the wavelength of each output pulse of the IPDA lidar system was constantly monitored and recorded, which was based on optical heterodyne method [17][18][19]. Using the recorded real-time wavelength for data inversion can reduce the error of inversion result caused by laser frequency drift.…”

Section: Introductionmentioning

confidence: 99%

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Airborne Validation Experiment of 1.57-μm Double-Pulse IPDA LIDAR for Atmospheric Carbon Dioxide Measurement

et al. 2020

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The demand for greenhouse gas measurement has increased dramatically due to global warming. A 1.57-μm airborne double-pulse integrated-path differential absorption (IPDA) light detection and ranging (LIDAR) system for CO2 concentration measurement was developed. The airborne field experiments of this IPDA LIDAR system were conducted at a flight altitude of approximately 7 km, and the weak echo signal of the ocean area was successfully received. The matched filter algorithm was applied to the retrieval of the weak signals, and the pulse integration method was used to improve the signal-to-noise ratio. The inversion results of the CO2 column-averaged dry-air mixing ratio (XCO2) by the scheme of averaging after log (AVD) and the scheme of averaging signals before log were compared. The AVD method was found more effective for the experiment. The long-term correlation between the changing trends of XCO2 retrieved by the IPDA LIDAR system and CO2 dry-air volume mixing ratio measured by the in-situ instrument reached 92%. In the steady stage of the open area (30 km away from the coast), which is almost unaffected by the residential areas, the mean value of XCO2 retrieved by the IPDA LIDAR system was 414.69 ppm, with the standard deviation being 1.02 ppm. Compared with the CO2 concentration measured by the in-situ instrument in the same period, bias was 1.30 ppm. The flight path passed across the ocean, residential, and mountainous areas, with the mean value of XCO2 of the three areas being 419.35, 429.29, and 422.52 ppm, respectively. The gradient of the residential and ocean areas was 9.94 ppm, with that of the residential and mountainous areas being 6.77 ppm. Obvious gradients were found in different regions.

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Section: Ipda Lidar Instrument and Principlesupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Airborne Validation Experiment of 1.57-μm Double-Pulse IPDA LIDAR for Atmospheric Carbon Dioxide Measurement

et al. 2020

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“…There are many methods to stabilize laser frequency [21,22]. The 1572 nm seeder laser, 1572 nm frequency stabilization system, and the pulsed laser together generate the doublepulsed 1572 nm with frequency stability less than 0.60 MHz [23,24]. Beam splitter mirror 1 (BSM1) divides the 1572 nm laser pulse into two parts.…”

Section: Spaceborne Ipda Lidar Instrument and Principlementioning

confidence: 99%

Performance Improvement of Spaceborne Carbon Dioxide Detection IPDA LIDAR Using Linearty Optimized Amplifier of Photo-Detector

et al. 2021

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The spaceborne double-pulse integrated-path differential absorption (IPDA) light detection and ranging (LIDAR) system was found to be helpful in observing atmospheric CO2 and understanding the carbon cycle. The airborne experiments of a scale prototype of China’s planned spaceborne IPDA LIDAR was implemented in 2019. A problem with data inversion caused by the detector module nonlinearity was found. Through many experiments, the amplifier circuit board (ACB) of the detector module was proved to be the main factor causing the nonlinearity. Through amplifier circuit optimization, the original bandwidth of the ACB was changed to 1 MHz by using a fifth-order active filter. Compared with the original version, the linearity of optimized ACB is improved from 42.6% to 0.0747%. The optimized ACB was produced and its linearity was verified by experiments. In addition, the output waveform of the optimized ACB changes significantly, which will affect the random error (RE) of the optimized IPDA LIDAR system. Through the performance simulation, the RE of more than 90% of the global area is less than 0.728 ppm. Finally, the transfer model of the detector module was given, which will be helpful for the further optimization of the CO2 column-averaged dry-air mixing ratio (XCO2) inversion algorithm.

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“…High-power/energy single frequency lasers are widely used in applications such as interferometric gravitational wave detection, [1,2] global observations of greenhouse gases, [3,4] and Doppler wind lidars. [5,6] Injection seeding is an effective method for single mode selection in high-peak power Q-switched lasers.…”

mentioning

confidence: 99%

A 1-kHz Single Frequency Nd:YAG Ring Laser by Injection Seeding*

Cao¹,

Li²,

Wang³

et al. 2019

Chinese Phys. Lett.

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We report on an injection seeded 1 kHz single frequency pulsed Nd:YAG ring laser with pulse energy of 5.2 mJ and pulse width of 9.9 ns. The ramp-fire technique is used to maintain single frequency operation and the cavity length is modulated by an intracavity RbTiOPO 4 (RTP) crystal. The frequency stability (rms) of the output pulse is 1.99 MHz over 1 min and the linewidth is 64 MHz.

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Frequency Stabilization of Pulsed Injection-Seeded OPO Based on Optical Heterodyne Technique

Cited by 10 publications

References 15 publications

Airborne Validation Experiment of 1.57-μm Double-Pulse IPDA LIDAR for Atmospheric Carbon Dioxide Measurement

Airborne Validation Experiment of 1.57-μm Double-Pulse IPDA LIDAR for Atmospheric Carbon Dioxide Measurement

Performance Improvement of Spaceborne Carbon Dioxide Detection IPDA LIDAR Using Linearty Optimized Amplifier of Photo-Detector

A 1-kHz Single Frequency Nd:YAG Ring Laser by Injection Seeding*

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