scholarly journals 400 mW low noise continuous-wave single-frequency Er,Yb:YAl_3(BO_3)_4 laser at 155 μm

2013 ◽  
Vol 21 (5) ◽  
pp. 6082 ◽  
Author(s):  
Yuanji Li ◽  
Jinxia Feng ◽  
Peng Li ◽  
Kuanshou Zhang ◽  
Yujin Chen ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Low Noise ◽  
Single Frequency

Progress on High-Power Low-Noise Continuous-Wave Single-Frequency All-Solid-State Lasers

2021 ◽  
Vol 48 (5) ◽  
pp. 0501002
Author(s):  
张宽收 Zhang Kuanshou ◽  
卢华东 Lu Huadong ◽  
李渊骥 Li Yuanji ◽  
冯晋霞 Feng Jinxia
Keyword(s):  
Solid State ◽  
High Power ◽  
Continuous Wave ◽  
Low Noise ◽  
Single Frequency ◽  
Solid State Lasers

scholarly journals A Review of the High-Power All-Solid-State Single-Frequency Continuous-Wave Laser

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1426
Author(s):  
Weina Peng ◽  
Pixian Jin ◽  
Fengqin Li ◽  
Jing Su ◽  
Huadong Lu ◽  
...  
Keyword(s):  
Solid State ◽  
High Power ◽  
Continuous Wave ◽  
Beam Quality ◽  
Optical Loss ◽  
Low Noise ◽  
Stimulated Emission ◽  
Single Frequency ◽  
Laser Resonator ◽  
Laser Guidance

High-power all-solid-state single-frequency continuous-wave (CW) lasers have been applied in basic research such as atomic physics, precision measurement, radar and laser guidance, as well as defense and military fields owing to their intrinsic advantages of high beam quality, low noise, narrow linewidth, and high coherence. With the rapid developments of sciences and technologies, the traditional single-frequency lasers cannot meet the development needs of emerging science and technology such as quantum technology, quantum measurement and quantum optics. After long-term efforts and technical research, a novel theory and technology was proposed and developed for improving the whole performance of high-power all-solid-state single-frequency CW lasers, which was implemented by actively introducing a nonlinear optical loss and controlling the stimulated emission rate (SER) in the laser resonator. As a result, the output power, power and frequency stabilities, tuning range and intensity noise of the single-frequency lasers were effectively enhanced.

A Stable 22-W Low-Noise Continuous-Wave Single-Frequency Nd:YVO 4 Laser at 1.06 μm Directly Pumped by a Laser Diode

2012 ◽  
Vol 29 (5) ◽  
pp. 054205 ◽  
Author(s):  
Qin Liu ◽  
Jian-Li Liu ◽  
Yue-Chun Jiao ◽  
Jin-Xia Feng ◽  
Kuan-Shou Zhang
Keyword(s):  
Laser Diode ◽  
Continuous Wave ◽  
Low Noise ◽  
Single Frequency

Low Noise Continuous-Wave Single-Frequency Dual-Wavelength Laser Operating at 532 nm and 1.06 μm

2019 ◽  
Vol 46 (4) ◽  
pp. 0401005
Author(s):  
高英豪 Gao Yinghao ◽  
李渊骥 Li Yuanji ◽  
冯晋霞 Feng Jinxia ◽  
张宽收 Zhang Kuanshou
Keyword(s):  
Continuous Wave ◽  
Low Noise ◽  
Dual Wavelength ◽  
Single Frequency ◽  
Dual Wavelength Laser ◽  
532 Nm

Low Noise Continuous-Wave Single Frequency 780 nm Laser High-Efficiently Generated by Extra-Cavity-Enhanced Frequency Doubling

2014 ◽  
Vol 41 (5) ◽  
pp. 0502003 ◽  
Author(s):  
李宏 Li Hong ◽  
冯晋霞 Feng Jinxia ◽  
万振菊 Wan Zhenju ◽  
张宽收 Zhang Kuanshou
Keyword(s):  
Continuous Wave ◽  
Frequency Doubling ◽  
Low Noise ◽  
Single Frequency

scholarly journals Quasi-CW Pumping of a Single-Frequency Fiber Amplifier for Efficient SHG in PPLN Crystals with Reduced Thermal Load

2021 ◽  
Vol 12 (1) ◽  
pp. 285
Author(s):  
Enkeleda Balliu ◽  
Magnus Engholm ◽  
Michel Digonnet ◽  
Hans-Erik Nilsson
Keyword(s):  
Near Infrared ◽  
Continuous Wave ◽  
Second Harmonic ◽  
Fiber Amplifier ◽  
Wave Mode ◽  
Low Noise ◽  
Visible Spectral Range ◽  
High Resolution Spectroscopy ◽  
Single Frequency ◽  
Sensing Applications

Single-frequency lasers are essential for high-resolution spectroscopy and sensing applications as they combine high-frequency stability with low noise and high output power stability. For many of these applications, there is increasing interest in power-scaling single-frequency sources, both in the near-infrared and visible spectral range. We report the second-harmonic generation of 670 µJ at 532 nm of a single-frequency fiber amplifier signal operating in the quasi-continuous-wave mode in a 10-mm periodically poled Mg-doped lithium niobate (MgO:PPLN) crystal, while increasing compactness. To the best of our knowledge, this is the highest pulse energy generated in this crystal, which may find applications in the visible and UV such as remote Raman spectroscopy.

scholarly journals A Local Oscillator Phase Compensation Technique for Ultra-Wideband Stepped-Frequency Continuous Wave Radar Based on a Low-Cost Software-Defined Radio

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 780
Author(s):  
Kazunori Takahashi ◽  
Takashi Miwa
Keyword(s):  
Software Defined Radio ◽  
Initial Phase ◽  
Continuous Wave ◽  
Low Cost ◽  
Local Oscillator ◽  
The Other ◽  
Ultra Wideband ◽  
Single Frequency ◽  
Wave Radar ◽  
Stepped Frequency

The paper discusses a way to configure a stepped-frequency continuous wave (SFCW) radar using a low-cost software-defined radio (SDR). The most of high-end SDRs offer multiple transmitter (TX) and receiver (RX) channels, one of which can be used as the reference channel for compensating the initial phases of TX and RX local oscillator (LO) signals. It is same as how commercial vector network analyzers (VNAs) compensate for the LO initial phase. These SDRs can thus acquire phase-coherent in-phase and quadrature (I/Q) data without additional components and an SFCW radar can be easily configured. On the other hand, low-cost SDRs typically have only one transmitter and receiver. Therefore, the LO initial phase has to be compensated and the phases of the received I/Q signals have to be retrieved, preferably without employing an additional receiver and components to retain the system low-cost and simple. The present paper illustrates that the difference between the phases of TX and RX LO signals varies when the LO frequency is changed because of the timing of the commencement of the mixing. The paper then proposes a technique to compensate for the LO initial phases using the internal RF loopback of the transceiver chip and to reconstruct a pulse, which requires two streaming: one for the device under test (DUT) channel and the other for the internal RF loopback channel. The effect of the LO initial phase and the proposed method for the compensation are demonstrated by experiments at a single frequency and sweeping frequency, respectively. The results show that the proposed method can compensate for the LO initial phases and ultra-wideband (UWB) pulses can be reconstructed correctly from the data sampled by a low-cost SDR.

High-power, continuous-wave, single-frequency, all-periodically-poled, near-infrared source

2012 ◽  
Vol 37 (24) ◽  
pp. 5049 ◽  
Author(s):  
Kavita Devi ◽  
S. Chaitanya Kumar ◽  
M. Ebrahim-Zadeh
Keyword(s):  
High Power ◽  
Near Infrared ◽  
Continuous Wave ◽  
Single Frequency ◽  
Periodically Poled ◽  
Infrared Source
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