124 lines
2.5 KiB
Plaintext
124 lines
2.5 KiB
Plaintext
{
|
|
"cells": [
|
|
{
|
|
"cell_type": "code",
|
|
"execution_count": 1,
|
|
"metadata": {},
|
|
"outputs": [],
|
|
"source": [
|
|
"#add relative path to backend\n",
|
|
"import sys\n",
|
|
"sys.path.append('../../clean_diag/backend')\n",
|
|
"\n",
|
|
"import trap_units as si"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "markdown",
|
|
"metadata": {},
|
|
"source": [
|
|
"A simple lens with f=30mm requires frequency spacing: $ \\Delta \\nu \\approx \\frac{v_s}{\\lambda f} \\Delta d $"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "code",
|
|
"execution_count": 2,
|
|
"metadata": {},
|
|
"outputs": [
|
|
{
|
|
"name": "stdout",
|
|
"output_type": "stream",
|
|
"text": [
|
|
"frequency difference: 186.842 kHz\n"
|
|
]
|
|
}
|
|
],
|
|
"source": [
|
|
"print(f\"frequency difference: {4260*si.m/si.s / (532*si.nm * 30*si.mm) * 700*si.nm /si.kHz:.3f} kHz\")"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "markdown",
|
|
"metadata": {},
|
|
"source": [
|
|
"In Kaufmann paper they report function spacing of 0.209(3)um/MHz\n",
|
|
"\n",
|
|
"For our spacing >700nm this means:"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "code",
|
|
"execution_count": 3,
|
|
"metadata": {},
|
|
"outputs": [
|
|
{
|
|
"name": "stdout",
|
|
"output_type": "stream",
|
|
"text": [
|
|
"frequency difference: 3349.282 kHz\n"
|
|
]
|
|
}
|
|
],
|
|
"source": [
|
|
"print(f\"frequency difference: {0.7*si.um /(0.209*si.um/si.MHz) /si.kHz:.3f} kHz\")"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "markdown",
|
|
"metadata": {},
|
|
"source": [
|
|
"Try to reproduce their function spacing: $\\lambda f / v_s$:\n",
|
|
"\n",
|
|
"Only found the working distance, so assume it's close to focal length.\n",
|
|
"\n",
|
|
"Factor 20 comes from 20x beam expander in front of objective."
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "code",
|
|
"execution_count": 8,
|
|
"metadata": {},
|
|
"outputs": [
|
|
{
|
|
"name": "stdout",
|
|
"output_type": "stream",
|
|
"text": [
|
|
"function spacing: 0.2100 um/MHz\n"
|
|
]
|
|
}
|
|
],
|
|
"source": [
|
|
"print(f\"function spacing: {852*si.nm * 21*si.mm / (4260*si.m/si.s) /(si.um/si.MHz) /20:.4f} um/MHz\")"
|
|
]
|
|
},
|
|
{
|
|
"cell_type": "code",
|
|
"execution_count": null,
|
|
"metadata": {},
|
|
"outputs": [],
|
|
"source": []
|
|
}
|
|
],
|
|
"metadata": {
|
|
"kernelspec": {
|
|
"display_name": "base",
|
|
"language": "python",
|
|
"name": "python3"
|
|
},
|
|
"language_info": {
|
|
"codemirror_mode": {
|
|
"name": "ipython",
|
|
"version": 3
|
|
},
|
|
"file_extension": ".py",
|
|
"mimetype": "text/x-python",
|
|
"name": "python",
|
|
"nbconvert_exporter": "python",
|
|
"pygments_lexer": "ipython3",
|
|
"version": "3.12.3"
|
|
}
|
|
},
|
|
"nbformat": 4,
|
|
"nbformat_minor": 2
|
|
}
|