Method and system for angle determination, program-controlled offset and locking of inner cavity etalon
An etalon and angle technology, which is applied in the field of laser and nonlinear optical frequency conversion, can solve the problems of continuous non-mode-hopping tuning with limited bandwidth, difficulty in simultaneously satisfying multi-band, broadband non-mode-hopping tuning, high tuning speed, and slow tuning speed, etc.
Active Publication Date: 2021-08-03
SHANXI UNIV
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although part of the mode hopping caused by temperature fluctuations can be overcome by slow temperature tuning, frequent mode hopping still occurs at high pump power due to the spontaneous parametric amplification process
Due to the slow tuning speed and the limited bandwidth of continuous mode-hop-free tuning, the practicability is greatly limited
[0008] In short, the above three commonly used methods are generally difficult to meet the requirements of multi-band, broadband, mode-hop-free tuning and high tuning speed for applications such as gas detection and tracking, precision spectroscopy, etc.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment approach
[0113] The pump source 1 adopts a continuous single-frequency laser with a center wavelength of 1064nm, and the pump light power injected into the OPO cavity is set to be 21W; Periodically poled lithium niobate crystal; the reflectivity of the cavity mirror to signal light is higher than 99.8%, wherein the cavity mirror includes a first cavity mirror 2.1, a second cavity mirror 2.2, a third cavity mirror 2.3 and a fourth cavity mirror 2.4; The transmittance of the output mirror to the signal light is 2%, wherein the output mirror includes a first output mirror 5.1 and a second output mirror 5.2; the etalon 4 is a lithium niobate crystal with a thickness of 0.3 mm and both ends of which are polished and uncoated. The cavity length of the OPO resonator is 415mm. The temperature controller 7 adopts a self-made temperature controller 7 with a temperature control accuracy better than 0.002°C and can be controlled by a program; the data acquisition and output module 9 adopts a comme...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| reflectance | aaaaa | aaaaa |
| transmittivity | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses an angle determination, program-controlled bias and locking method and system of an inner cavity etalon, and relates to the technical field of laser and nonlinear optical frequency conversion. The angle determination method includes: obtaining the real-time temperature of the nonlinear crystal; The real-time temperature calculation of the etalon angle includes: obtaining the experimental parameters of the optical parametric oscillator and the initial tuning temperature, and calculating the normalized parametric gain spectrum under different etalon angles; the maximum normalized parametric gain value and the corresponding Write the etalon angle into the array; determine the minimum value of the maximum normalized parameter gain value in the array; and output the etalon angle corresponding to the minimum value and the temperature of the nonlinear crystal when the minimum value is less than 0. The invention can realize the broadband continuous mode-hop-free tunable of the optical parametric oscillator.
Description
technical field [0001] The invention relates to the technical field of laser and nonlinear optical frequency conversion, in particular to a method and system for angle determination, program-controlled bias and locking of an inner cavity etalon. Background technique [0002] The Optical Parametric Oscillator (OPO) is composed of pump light, nonlinear crystal, and resonant cavity. Through the process of optical parametric oscillation, signal light and idle light are simultaneously generated. Ideally, the frequency of the two beams of light generated by the OPO is determined by the condition of energy conservation (that is, the frequency of the pump light is equal to the sum of the frequency of the signal light and the frequency of the idle light) and the condition of complete phase matching (that is, the frequency of the pump light is equal to the frequency of the idle light in the nonlinear crystal The product of the refractive index is equal to the sum of the products of th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/108H01S3/13H01S3/136
CPCH01S3/1083H01S3/13H01S3/136
Inventor 张宽收戚蒙李渊骥冯晋霞
Owner SHANXI UNIV